Quoting Nikki Woods4:" I have done that numerous times and so far its gotten me nowhere. If my grandpa wins full custody tomorrow, ... [snip!] ... such. She needs a woman figure to raise her. She just should be with me. I'm her mom and the most stable place for her now. "
And you should (get it notarized, the living arrangement). However, I really do think you should have your own lawyer and get full custody for yourself. As long as your grandpa has legal custody, it really is his say so in regards to her. And be cautious of your aunt.... it sounds like she's gearing up to get your daughter living with her. Your grandpa didn't really give you a committed answer. I would get the living arrangement hammered out ASAP