She really didn't understand. She believed firmly in everyone having the freedom to make their own choices in life, and so of course this should be up to him. After all... she'd been trapped by her own choices, resigning herself to a life of unchained captivity on Jakku. She didn't want him doing the same for himself.

A little confused by the sudden mention of Leia, Rey blinked and replied, "She did, yes. She couldn't exactly come herself, since she had a Resistance to lead. And I'm... well, I'm probably the most expendable person she had."

Rey knew that wasn't entirely true, that she'd volunteered for this specifically because she wanted to learn more about the Force. But as for why Leia would agree to that otherwise, it was anyone's guess.