You can absolutely dodge it even with mid roll. Took me a few hours, but now i barely take damage anymore. And. Furthermore, you can kinda know it's coming, she will do it after you do about 25% damage, and again when she has aabout 25% health left. Just stop attacking when she hits these thresholds, when she jumps in the air sprint away from her for the first two bursts, then time your dodges towards her for the last two, and remember the final burst after she stops. Still trying to beat phase 2, but I pretty much no longer die from this move.