klyd and afsaneh, I know how you two feel and you both have my sympathy. My mom had Alzheimers and it was pretty bad. She had moved back to New York after my father died and we placed her in an assisted living facility. The first year or so it wasn't too bad but she started forgetting a lot of things and she became worse. One day I had a doctor's appointment near where she lived and wanted to surprise her with a visit. I walked in to the place's lobby and saw her sitting with some other women. I went over to say hello and there was absolutely no look of recognition by her. She didn't know who I was. That absolutely crushed me. My own mom didn't know me. I've never gotten over that.

Enjoy what time you have left with your loved ones and hopefully they will know you and be able to feel your love for them.