BTW, I'm all in favor of full disclosure with the potential new SIL... somehow I think you're the ideal person for that job!
Sounds like you're going to be keeping an eye on lots of female relatives. I'll say a prayer for you to keep your clarity and strength. They're lucky to have someone who is as committed to healing as you are as part of the family.
"There are only 2 ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle."