I wonder if the feeling of confusion is coming up?
for some of us feeling confused can feel scary.
Your T. has changed your meeting days, which could have one feeling that T. has their back, so to speak. and yet-- T. didn't(couldn't) see an important situation with your son, of who is closest to your heart-- so that may feel as though your T. didn't have your back.

if I were you, I'd feel confused....

not blaming T. coz, how could she have known everything-- yet-- it's still kind of scary to feel that T. didn't "get it" on this occasion..... she only got part of it....

anyway-- do you think this could be what's going on?

fins