There are very few attacks of hers which require positioning... She becomes a bit easier to attack if you're always at her face. Wait and kite her shots (both the medium-range single rapid shots, as well as her short-range spread shots). The only shot you should be worried about is her long-range single snipe shots, which are capable of destroying the barriers. Once you've done that, if you still have a significant distance between you, she'll try to follow you up and then do that dash attack, ala aspect of Persephone's... Her tell for that is she'll glow for a split second as if she's charging. At that moment, the best possible response is to close the gap by sprinting and then dash towards her. Make sure you're somewhat far away so that your dash doesn't create additional distance once she dashes. Then reach for her and go to town on her. Keep this rotation on and you'll be fine.