I am sorry to hear that your T didn't forgot about this information. That sucks, and you must have felt hurt.

I don't know if it helps, but some people are just like that. I have discussed this topic with a friend who is very people oriented, loves to talk to people and help people she cares about - but she just can't remember the details and the facts! She explained to me that she is very focused on the here and now and the moment when she connects with a person, and also at the same time very future oriented. She always tries to come up with solutions and plans on how to solve things. She never thinks about or dwells on the past, only what you can do from now on is important. She deeply cares about her friends feelings, but can't remember if it was my grandpa or grandma who died last friday or was it tuesday? And God knows what she had for breakfast this morning!?

I don't mean this as an excuse for your T, but perhaps your T is somewhat like my friend? Maybe the T cares but just have another view on how to do that and what is important to remember and not? I don't know, maybe talk to T and ask about their memory and how they keep track about their clients stories?

Take care <3