(((((( Suga )))))))
Just because she has a valid reason for cancelling your session, doesn't mean you're somehow not 'allowed' to feel bad and sad about it. In fact if I were in your place I'd be feeling pretty angry too (which seems not ok considering the T is sick, and obviously can't help it and hasn't cancelled deliberately.) But whatever you are feeling, you are right to feel it - I hope you are not squashing how you feel because you think you are wrong to feel that way?
I haven't read your story so not sure about the background - it sounds like you really needed your T's support right now and she's effectively let you down (I know, not deliberately, but that might be how it feels.) Is there anyone else you could go to, to tide you over until you can see your T again next week?
I hope you stay safe and hang in there
Torn