Used my 4* to become uncollected and in aq,those consistent bleeds and regen helped a lot in the dreaded massochism chapter..if she is one of ur first 4*,then will help u out a lot..don't throw any specials with her and keep her at full 3 bars of power for max regen in the beginning...with time u will be able to judge whether to throw her specials or not depending on ur regen needs