Ok so you need to put the crack at the side of babies mouth so there aren't any gums touching the crack. So twist the breast with one hand as best as possible or she might need her Dh to twist it for her at first. It sounds weird but my midwife and LC showed me.

She also needs to get on top of the thrush ASAP. Whilever she has thrush the crack won't heal. Stop lansinoh and anything adding moisture to the environment. Seriously! It made mine so much worse.

Get diflucan OTC single dose x 3 and then get a script for nilstat. Look up RWH website topic thrush in lactation. It is written by a dr who did her PhD in thrush and she has excellent advice. Her dosage for antifungals is intense and the chemist won't like it, but it is the best most current research into the area.

Get daktarin oral gel for babies mouth and her nipples.

Thrush is awful. I hope she gets relief soon.