Is this plausible? Did she/they know a Sarah?
As far as Grandma's money, I'd probably get my share left to someone else I could trust to hold it for me until the divorce is finished. Say your friend's share is to be $10K. Could that $10K be left to your friend's mother instead, witht he understanding that mother just puts it into a savings account until all divorce proceedings are finished?
I wouldn't. I've seen large amount of money do strange things to people.