I'm always open to having former students for Caelum since she's been around for a long time in terms of teaching years so yes! He's more than welcomed to be a former student of hers and she would have been very concerned about him when he was pulled out of her classes and would have done her best to check up on him after.

And I think she would have tried to see how he was doing to this day too since she'll be the type to notice the shift in his personality and be concerned. I'll definitely be keeping my eye out for you in the TDM in a bit since I would love for them to meet and see how they interact after all this time! She would have tried to been supportive to him as possible given what he was going through then.