A.,
Please bear with me.. this is lengthy but as a fellow mom, and woman, are there ever any such things as short answers? :) First, I have to say that you're a good mom for putting your child's needs ahead of others.. that's part of our job is to be their "spokesperson" till they're on their own so I applaud you for thinking twice especially when it comes to one so young. Always go with your heart! I believe God gave us an extra touch of instinct when it comes to our own kids and not all things should be decided on what's the norm for other kids or what other moms do... so with that, go with what you think your daughter can handle and do with my thoughts what you like ok? :)
As you probably know and have heard, you could have 20 or more kids and each one would be different! :) I'm a mother of 5 and my kids are no exception - they have some similarities but their differences have made my husband and me re-think how we discipline them at times and what we allow them to do. I've been in your shoes a few times (not for a wedding but for other friend and family events) and depending on which of my children it was, is how the decision was/is reached.
I've found that not only is bedtime and sleep a factor, but their personality is another... is your daughter sociable and love being around people or is she shy and would rather be at your side then walking down an aisle past so many people? How long is her attention span and ability to sit or stand through long events like family events, church, and the like? WIll she have to stand up during the whole wedding or will they provide a chair for her.. and will she be content to stay there with or without you close by or do you think she'll need entertaining to stay quiet? Is she very verbal.. would she understand what to do, where to go, etc.? I don't think there's necessarily an age limit as it is how "young" is any given child too young (physically, verbally, etc. immature) to handle the position of flower girl? If thought of this way, then that would be how you'd explain it to the other sibling whose wedding she couldn't be in last year. Your daughter just simply wasn't ready yet physically, sleep-wise (I can't imagine hardly anyone would be at that age!) In the early years, just one year makes such a BIG difference! Your friend whose wedding your child was not in will understand that some day when/if she has her own children. She'll have to trust you till then that it was your child you had in mind when making that decision and that it wasn't anything personal.. that is, if she is to be in this next one.
As far as naps, I have to share first that I have 2 that have just always needed their sleep. They seem to run on "all engines" when they're awake so if they don't get their sleep, we all "suffer". Then we have two that though they sleep more than the other two, their personalities are such that they are about as easy-going and sweet when they're tired as when they've gotten to sleep. (Our 5th child is 10 months old, so we have yet to decide on her :)).
I'm sorry to babble on but just a few more thoughts to ask/share... does your daughter "need" her sleep? Does she wake up in the morning in a good mood after falling asleep at 10 or is she crabby? As my kids grew older and seemed to fight their naps, I gave them a "trial period".. if they miss their nap and can stay up till their normal bedtime without showing signs that they should've taken one for at least 3, 4 days, then I feel they've "out grown" naps. Some kids just don't seem to need to take them for as many years as others. (I was one who almost always came home from school and fell asleep on the couch even through elementary.. one of my kids is like that, the others not so much!)
But seeing as you mentioned your daughter crashing at 4 when she fights her nap, then the following may work for her better. If my kiddos crashed later, were crabby, hyper (trying to keep themselves up), or anything out of the norm, then I have them have a rest time instead of a nap. At or around the same time as their nap would've been, I have them lie down in their room and rest.. listen to a favorite cd, look at books, something as non-stimulating as possible that they can do in bed for at least an hour. If they're tired enough that day, they'll fall asleep. If not, at least their "batteries" still got a recharge of some kind so they're not running on "go" all day long.
You still have a few months to where she'll have "told" you already if she can handle the job or not but I know something like this, you probably need to let them know "now" if she can be involved or not. Ask your friends how long you have to let them know your decision then maybe give her a "trial period" if possible. If she seems to respond well to just resting, then you can decide if a yes is still in order, if the other thoughts I'd wondered about are something else to consider. Even if it's "iffy" as far as the sleep factor.. that she still sleeps during rest time some days and not on others, then I'd say she's on her way to outgrowing nap time and possible will have done so by July.
If all thoughts point to a "yes", there are a few things that might be helpful for you and your little one that can ease as much anxiety about the "big day" as possible.. like making sure she doesn't do anything out of the ordinary or draining the day of or before the wedding so she's not worn out or feeling the need for a nap that day to make up for the extra energy she used.. no bday parties, all day trips to the zoo, or whatnot (not that those would be likely.. just can't think of anything better off the top of my head!).
And depending on how verbal your child is, you could explain and practice with her what she'll need to do as flower girl, off and on for at least a couple of weeks ahead of time. Walking down a hallway with flowers, wearing a fancy dress, etc. would help her be familiar with the job so the actual day isn't such a surprise.
I may think of more things to consider tomorrow but it's late so I'm not running on all cylinders at the moment. But I just had to throw out the few that hit me when I read your letter and hope that I've helped and not hindered you in any way!
You know your child better than anyone so believe in yourself as the mommy God gave her in you and do what you feel is best for her ok?
Sincerely,
H. M.