the black guys acting was really bad... like he didn't belong. it was really hard to watch his mono-tone delivery and campy excitement, if he was there to make skye's acting look good by acting so bad, mission successful.
i think our momma may theory could still pan out, pretty sure she's highly classified so her files would be high level only, and that other girl skye saw was pretty much just a shield fedex girl.
we just don't know May's age on the show, right now, she's a super cougar irl, hell if she had a child with bad decisions and then that child also made bad decisions she could be a great-grandma. but then the show again never puts out May's age or that skye is asian (she probably just looks like a white girl to most ppl, her asian features are very slight)