We moved my mom in with us Thanksgiving 2008. We went through all her stuff but because of her dementia, she wouldn't "let go of anything"... We ended up packing EVERYTHING in a 26 ft moving van and putting it in storage here. We built her an apartment onto our house ... she has her separate living quarters and has meals with us. It is tremendously difficult at time. The stress is incredible. She doesn't qualify now because I have be able to get her health stable. Her dementia is getting worse and she is NOT nice a lot of the time. She doesn't like my dh and most times I don't think she like me either.
The stress that resulted in moving her in with us has cause mine and dh health to deteriorate. Make sure you have others available to help you. even if it's just a few hrs a week... both you and she will appreciate it.
Good luck