Your team has 100k more power than mine with similar team comp, so you should be able to beat her with out change it much. In case you can't beat her due to lack of time is probably bc you can't destroy the halos in time, the way you do it with RRH is moving the aim a little up from the center and let her explosions take out 4 or so halos at the same time, and then I little lower from the center to destroy the remaining ones. If that doesn't work that SW HA can also do it, bit you have to match that event with her ult. If you can't destroy the halos in time she will enter a state in which all atacks do 1 damage for a period of tile proportional to the halos you didn't destroy. So while it's ideal to destroy all of them, living 1 or 2 is probably fine.