For Misako, and especially Poltergeist.
I found it so heart wrenching and some how mean, that Auge pushed her away.
Trees thinks the same way. Now, none of us want to say, that Auge is a bad mother, and somewhere, her philosophy is right. But not in that kind of moments.
Trees herself has another picture of a mother. Her own was a caring and lovely one, so she wants to be like that and she can't stand to see others cry.
The sentence, Trees says is the answer to Polts question in the little RPG Misako and I had in the comments of the picture "Cold".