She probably has power of attorney 😃

I think that might be something - especially the "B" top loop

Faking the "J" wouldn't be hard, as it is just a straight line. The "R" and the "B" look off tho. They seem to match with Jills characters. Also the way that the "iden" is continued after the "B" looks a lot like Jill Bidens handwriting

Except when you have cognitive decline your penmanship goes to shit.