"I know all about waiting. "
Because it's all she's ever done, all she's scared she'll ever do.
"You're afraid that you'll never be as strong as Darth Vader."
Because it all comes down to him, doesn't it? The man who was born of the Force and who made all of the wrong choices till the end. Rey's wrapped up in the web of the Skywalker family, and she's afraid she'll never untangle herself from these messed up people — with a tendency for patricide.
And now there's this other one, this Skywalker who's chosen the wrong choices and chosen her.