I'm so sorry about your grandpa, what an awful situation to be in and yes, I think she could have acknowledged that in her reply and in all honestly I'd ask her why she didn't and tell her how cold and disrespectful it felt.

I say that as someone who really struggles with out of session contact and thinks that your T1 set you up by fostering dependency early on in your relationship which keeps you stuck (and her getting paid for 2 sessions a week). I have very limited out of session contact with my T, mostly for scheduling but I have very occasionally contacted her when I've been in crisis and once recently following a close bereavement. She alway responds quickly, acknowledging the emotional content of what I've sent and either offering a session or reminding me of when I'm seeing her next. Sometimes I wish she would be filler in her response but I know she's holding her boundary and can't be available all the time. But if I really need her, she's there and makes time to see me.

I guess what I'm saying is that there's a middle way, it's fine and right for her to have clear boundaries and she may be wary of offering more support because of how things have been with T1 but that was a pretty cold response.