I have to admit that I love your post and your honesty!! I think all of us at times deal with people in our lives that we a r ea tad bit jealous of...
I know I see all the great big ugly warts inside my own family...I wish I did more with my kids (I do a lot, martial arts, swimming, trips to the zoo, etc...but sometimes I wonder about the quality time),
I HAD to hire a housekeeper because my cleaning did not stand up to my husband's standards (that ended long standing arguments between me who would clean the house and then get mad when my husband would go re-clean everything I spent all day cleaning),
I cook homemade meals every night because they make my husband happy (not because I really really enjoy cooking),
I do stay at home (but wish I was working at least part time...to have a bit more money to go around),
I read a lot (because it is my escape from reality for a while),
I do sew and paint (see previous a mini escape for a bit...),
I go to church and take a Bible study (oh, I know what a pitiful Christian I really am inside always trying to have a better relationship with Him but not always succeeding and God does too but loves me any ways),
I love to entertain and have people over (my husband hates it but does it for my sake...but we usually have a few sniping matches before and afterwards).
I have a strong marriage (but it has its issues and we really work on them...but behind closed doors).
So on the outside I could look like your SIL, a SAHM with a clean house, I sew and paint, I cook homemade meals every night, I read a lot of books, and I am a Christian, oh and I shop and never pay retail (because we can't afford retail...lol). HOWEVER the inside of my life is full of trials and tribulations and ISSUES...and ugly stuff...
My aunt always told me that a package could be beautifully wrapped on the outside but be a box of snakes on the inside. My package is pretty and not full of snakes...but defiantly a few slugs and snags. Your SIL's is too...you just don't get to see them...
Take a step back and look at your life...you are a mom who does it all, you work and juggle two preteen kids (who are pretty self sufficient, no diapers, etc), you don't have time to waste on trivial crafty things, your husband works hard to help support your family in a good lifestyle...hey I am starting to want to trade with you...you really get to keep things not prefectly clean at home (wow, that would rock!! after living with my Mr. OCD).
I am sending you a huge hug!!! Too bad we really couldn't trade shoes like that movie Freaky Friday and find out how the other half really lives. Try and go and be relaxed...and know she has her slugs, snails and maybe a few snakes hidden in her closet that will all come crawling out when you go home!!