Really Tad? This was her Mother in law for a quarter century and you don't see why she would pass it on? She left you remember? Not the family? Or so she would like to believe.....
Mine did similar. I told her same - tell them yourself. I am not a messenger. She never did, but that's different.
Mine purged all her friends and most of her family. She basically reversed everything she was prior. Down to the way she talked, walked, spoke, and her family members, friends, etc. If she was friendly wiht them before, she stopped. If she wasn't, she started.
Completely whacky. Or was it? I really won't ever know the why, so I cannot answer that question. I only the know the what and can only report on that from my perspective. But I see yours doing some similar things. You are handling it much better than I did No contact is working very well and I suggest you keep that up starting immediately.
Later dude,
AJ
"Our lives begin to end the day we become silent about things that matter" MLK Put the glass down... "Yesterday I was clever so I wanted to change the world Today I am wise, so I am changing myself."