Given her parents, it's hard to think that she can't take care of herself.
As far as story goes, Blazblue obviously attempts to take it more seriously than most fighters. What ifs are kind of pointless though. Mori obviously knows people want to play her from his interviews, but he's very vague about whether that will ever happen. Either way I'd say just don't assume she will be playable until she actually has dialogue about taking things into her own hands in a console version's story mode. As usually there is some foreshadowing as to which characters are going to become playable. (Outside of the CP characters due to going to an entirely new area.)