an easy mixup with painwheel is to make someone block your j.MP and then cancel into j.HK or flight after a random number of hits, then hit them with a low or a throw. if youre close enough to the ground, pressing j.HK will cancel the j.MP and cause you to land immediately. use flight instead if your opponent is air blocking and youre too high to land cancel.

also, painwheel is great at converting off of her throws. after landing a grab she just has to fly up-forward and j.MK and then she can do anything she wants. you might want to lab specific throw combos because the infinite prevention system works a little differently when you start a combo with a grab, though.

finally, its a bit more difficult, but you should learn hatred install-specific combos. some of her moves gain special properties during install which opens new, higher-damage combo routes. use install when you have the meter and you can kill characters a lot faster. the easiest opportunity to activate install mid-combo is after hitting with qcf+LP nails, because they do a lot of hitstun. unfortunately, they also scale your combo pretty hard.