Make sure you document this all:
All the probs your child is having & what her Daddy has told her.
My XH did the same & tried to turn the kids against me, I am now in a custody battle & I have documents, dates, texts etc that prove manipulation 3 years ago.
I'm so sorry you're going through this, it really makes me mad when an adult can treat a child like this just to get at the other adult.
Remain calm, have a good talk to them, reassure them & yes please tell them that Daddy should not have said that, he was just upset.
Hugs.