<human>: Husband and i have been married 6 years, together for 7. I met his mom after we'd been dating for 2 weeks and we see her at least once a month. We all have a good relationship. 

His mom has a scar on her jaw that's very faint now but looks like it would have been a big deal at its origin. On the same side of her face, she has some facial paralysis. When she talks or makes facial expressions, that side of her face is pretty much frozen. This doesn't affect her speech, nor her sight (as far as we know). 

About a year ago I was reading Nancy Zieman's autobiography and she discusses how she was affected by Bell's Palsy as a child. I got curious and I asked my husband if he knew if his mom's scar and facial paralysis were related and if he knew what the story behind both things was. He said he had no clue. Apparently by the time he was old enough to notice, he was too afraid to ask her. We saw a photo of her as a child, and it looks like she has the paralysis, but it's too small to see if the scar is there. She has no other photos of herself as a child due to a flood in the early 90s that ruined 99% of their albums.

We've both been really curious about the whole thing for the past year, but don't know if it's even okay to ask her about it. And how would we even ask about it? We just want to know more about her life. Husband's parents are divorced and his dad doesn't seem to know/remember the story either. I'm sensing she's never mentioned it herself because she might not want to talk about it, but she's also not the type who tells a lot of childhood stories anyway. So, we're not sure if it's okay acceptable to bring it up.

Can you give me the gist of the text in a nutshell?
<bot>: MIL has a facial scar and paralysis that husband and I are curious about. Don't know if/how to ask about it.