I like RogueLeader’s mindset for a nobody version. Having anything to do with her parents kind of muddles up everything. In the last movie, just keep them as losers/drunks or whatever and that’s that.
Changing the focus on any visions or whatnot on her “new” family getting hurt/killed/whatever works better thematically for her and is a better motivation against Palps. I think that can be doable. Using flashes of the final battle or whatever would help with any vision stuff.