If Hermione had a nickel for every time that she tried to convince people that House Elves should be free, she would be quite rich. Of course none of them really agreed with her. Sometimes she even doubted herself when she was trying to explain things. "If they don't want to be liberated, then they don't have to. I mean we're not going to force them." People always made that assumption that she wanted to push them into something. That was as bad as forcing them to wait on people in the first place.
"I just think that they should have the option. For those that actually want to get out and don't have a way." Like Dobby. There had to be other Elves out there that were being mistreated by their owners. Or maybe one that just wanted to get out and see the world.
Hermione had charts and lists and all sorts of things, detailing just those thoughts. She just wanted to help. "They do, but getting them to do anything requires pulling teeth. They keep it just in case.. though in case what, who knows."