have you been praying over them??
My family is dealing with something similar. My grandfather of 82 has Alzheimers. Obviously you understand- probably more than I- that this is a demon of forgetfulness or oppression resting upon them. I remember reading somewhere that Paul (in the Bible) got annoyed with a demon inside of someone. He was so annoyed that right then and there he called it out of the person. Of course it came out.
I ask myself often, "How can I harness this power to cast infirmity and demons out...", but I also know I don't need to ask that question. We have that power.. you know that too

So I guess, for me, and now you :-P We are going to focus and day dream about this opportunity, and this window that will present itself to cast Alzheimers out. I've been dreaming and dreaming lately of healing people. In my dreams I just keep getting words from God, asking people if they want prayer.
I guess my point is... is that there is power in our spoken word, and prayer. Even a God bless you can change someone's life. Even mentioning the name of God can change their life... look at Kelly Clark. She over heard someone say, "Well, God loves you any ways," and it struck her in such a way to see out that person and ask them about Jesus, and how she can follow Him.
And also you are soooo right, those comments are just trying to flair you.... its trying to set off a reaction that eventually won't stop itself, and itself is a sickness.
sorry if I am rambling but I just wanted to connect this. In a healthy body, if we are injured it is usually localized- unless Satan has manipulated something. Hisatmines (inflames and makes swelling) and bradakinin (cause nerve impulses to say 'Pain!') and cytotoxins (starts killing and breaking down the damage done) are released because God put them there.. and they fix the problem locally... but our body also has a cell that STOPS the process cause we can't over do it ... because over doing it can cause damage (huge scars ) and make the problem systemic ( ex. a bee sting making someone die ).
Spiritually we are the _same_. We need to realize when satan is inflaming us, trying to kill us, and trying to cause pain. We need to detect when enough is ENOUGH and we are no longer going to let him inflame us, and pain us, and destroy us... I love to see that you are taking initiative to this, but I just wanted to make that connection and really encourage you to not let satan take ground. And what is yours- you can give it freely to them. It really sounds like they need freedom in Christ that you have.
I hope I helped... a little at least.

I'm here for prayer if you need it.