First of all,my best wishes that this will all work out.We had to put my mom in a home 15 years ago.She had had 3 strokes and was suffering from Alzheimers on top of other health issues.She needed constant professional medical care which was something I couldn't provide at home.
I felt guility at the beginning,but was able to reconsile myself that this was the best thing for everyone involved,and at least gave her some quality of life.But it was still tough visiting her.Half the time she didn't know who I was.
Anyway...I again wish your family well,and just know that you did the right thing.Sometimes the needs of the few or the one,outweigh the needs of the many.(yes I shamelessly ripped that off from Startrek)
Steve B