Dude, I'm with you.
Age the version of RBG in the pic, give her a little plastic surgery, and I'd say you've got a close match.
No idea on any potential relation, however. I just had a quick search for a "Maria" in RBG's life–ala Q "accidentally" misspelling Marina, thought maybe relation to look into–but it came up nothing…
I'm not much of a digger…