I have a feeling that chest is going to be used for comfort quite a lot.
Pushed his head so hard he almost went through the wall, gets up and walks away. Ah yes the forehead made out of diamond reinforced titanium.
Yeah, enough force to lift him up and send him flying concentrated into the point of a finger should probably have done some damage to his skull, then there's the stress on his neck from lifting the rest of the body with the force concentrated in the forehead and this really should have ended with flesh splattered all over the place.
We'll just have to say that, since she was trying very hard not to hurt him, magic somehow took the concentrated force of the finger flick and spread it evenly over the body while partially protecting him from impact when he finally hit the wall. Also, there definitely was some magic healing of some sort, though I think the kid might still be concussed and have no memory of why he was there.