J.L.
E.,
It sounds like your daughter is having separation anxiety. It is exhausting and frustrating, but this is a normal and temporary phase. This does not mean that your daughter will be throwing tantrums in public next year. ;) Please just hang in there!! Separation anxiety does get better, even though this is a particularly hard time for you.
I am a stay at home mom with a 10 month old son, and I found that the 6 - 9 month period was really difficult because of the separation anxiety (plus he was teething and that really affected him). A lot of babies have problems going down to sleep at night. I am not completely against the straight "cry it out" approach, but I just don't think it works for all families. What's worked for us is to stick to a daytime routine for naps and meals and playtimes and a bedtime routine that consists of dinner, a bath, then a feeding (I'm still nursing) then putting him in the crib - he might cry for a few minutes but at that point he is so sleepy it only lasts for a few minutes. Or sometimes there is no crying at all. If he keeps crying after 5 or 10 minutes, I do go in and check on him and soothe him, sometimes even nurse him down again. After he wakes up around 10 or 11, I just bring him into our bed and he stays there the rest of the night. I know this is not for everyone, but it works great for us. I found that Dr. Sears' parenting philosophy was really in line with my style of parenting and you may find some very helpful tips in his books such as The Baby Book and The Baby Sleep Book. His website is www.askdrsears.com.
Anyway, here are some tips that may help you at home during the day...I kept my son in an Exersaucer or a bouncy seat next to me while in the bathroom. When he could not bear to be away from me, I carried him in a backpack or an Ergo (a front/back/or side carrier that is very easy on the back). The main thing that helped me stay sane during this time was getting out of the house to keep us both entertained. You could try going to storytimes at Borders/Barnes and Noble/Babystyle/library, letting your baby play in the kids' play area at the library, going to friends' homes for babies' playgroups, and going to the park and letting your baby play on a blanket and watch the other kids (great way to meet other moms too).
I am so sorry to hear about your mom's passing. It is really hard being a first-time mom, and staying at home is so much challenging and tiring than expected. It is so much harder without any support...have you looked into joining your local MOMS club? (www.momsclub.org) You will be able to meet like-minded moms who are going through the same exact thing and you will feel more confident and more able to deal with this phase of life. It costs barely anything to get in touch with this network. They have babies playgroups at members' home and parks and organized activities. It's a lot of fun for moms and babies.
Best of luck to you.