My girlfriend is super submissive. How can I help her be more independent (not sure if that's the right word)?

Well actually I'm the same way lol I don't think there is anything you can do because that's just the way she is and she doesn't like to make decisions. She is telling you that whatever you'd like to do she would be fine doing it, so pretty much she is being open minded by accepting everything you have planned for her. She's the type of person that is not picky with anything that y'all want to do. If you look at it it's actually good that she's like that or would you like to have a girlfriend the complete opposite where she would want to do EVERYTHING her way and if you wanted to do something she wouldn't want to do it because she wants to do what she wants?