[x] These strange Familiars (Clara Dolls) are the main treats, try to take care of them first, they certainly won't make reaching the witch easy as long as they're there.
-[x] Try to divide them and make sure you don't end up alone, they work well together so disrupting their teamwork has priority.
-[x] Try to make advances toward the witch and see how they react, if they try to stop people, try to use this to control their movements.
-[x] They seems to be ground bound and don't have teleports, use your flight and teleports to your advantage, pair the girls who can't do this with you and your sisters so that they have easy access to this too.
-[x] Everyone who can should regularly bombard the weaker familiar, might as well reduce their numbers and the chances of their attacks hurting someone.
-[x] If it turns out that they can respawn or things like that, go for the witch, no need to exhaust yourself on a fight you cannot win.