Hi Emily!
Just as this disease manifests differently in each individual...such as time frame for stage progression, previous health condition of the loved one, personal relationship one has with the individual...and so forth........each one of us can tell you what worked well for us. How YOU decide to approach this with both inlaws will be a decision that can easily be adjusted if questions keep being asked.
Being one of 6 "kids"...and the only one who stayed here in the town where Mom was...I guess, being the oldest of 2 daughters too...I had much more contact with Mom. She was closer to my kids than the other 12 grandkids.
When 3 brothers moved her an hour away, supposedly for a 3-month stay at a NH while waiting for a broken hip to heal...the challenges she felt, and questions bouncing around her head seemed directed at me more than the others.
I knew she was scared! She was very aware of changes in her actions and speech. Sometimes, we even laughed together until tears came at "words" that simply appeared in her speech as she talked with me. Nouns were the first words that seemed to escape...or be replaced by curious words. SHE KNEW...AND WAS SCARED! They DO know...they are usually very good at keeping little secrets about this, but they are aware.
After the 3 months in the NH, Mom was moved to a locked Alzheimer's facility. We all realized there was no going back...her big old farmhouse waited to be emptied. (someone mentioned "hoarding" a while ago...yes, this also goes along with Alzheimer's)
A month or so after being there, Mom came right out and asked me what was wrong with her. Everyone else had danced around the truth...some of my siblings even lying to her about going home again...but she knew I'd give her a truthful answer...and I did. We held each other and cried for a long time. Then she leaned back and asked if I'd bring her some information on what lie ahead. That was 10 years ago...and I would do the same again.
I went to the Alzheimer's Association and picked up several packets...one even written to the person affected...and we read them together. I do realize this would not work for every one of us...again...each individual (and caretaker) is so different in their approach to this disease....but, during the next few months...while Mom still was able to process this information...we became even closer. I was the only one she could talk with about her fears. One brother seemed to judge her harshly...me too, because I was able to "go to her world" and understand her.
After a few months, of course...all this was forgotten...and her strange behaviors and broken sentences increased. I found if I simply picked up one word I recognized in those garbled words, and repeated it back to her...she thought I knew what she was trying to say!
If it were me at your MIL Dr. appt...I would give the receptionist a written description of her actions, your concerns, etc. as you sign her in. Ask questions on this paper that he can refer to and answer in front of your MIL. She will most likely hear all you say...and feel a little betrayed if she is talked about like she is not sitting there. Somehow...if "the words" come from the Doctor...they seem to believe them....this worked for all 3 of my loved ones afflicted with Alzheimer's.
caringsister54.....another strange thing I've noticed in this disease that Mom's frustration and disability to get her words out seemed to INCREASE with certain individuals...like she was trying harder to "please" that person...and her efforts always failed.
Sure didn't mean this to be so long! So many questions keep being brought up of situations I've been thru many times! Hope this helps......Pam