Lois, I lost my MIL towards the end of last year, after a rough in and out of hospital year for her. She had some terrible falls, which is not unusual for Alzheimer's. So, I know what you are going through and am so glad you have family for a support team! I love some of the memories of chatting with her, even though she was not always "with it." Hang on to some of those more memorable talks with your MIL. Write them down! So they will last, when she is gone!
Hugs and prayers winging their way to you, your MIL and your family!
Dawn