Dear T,
I really hope you're not mad at me for sending that email. Or annoyed. Or frustrated. I know it's OK if you are, but I still don't want you to be. I suppose it was an unfair request. And maybe it's just that you don't know how to answer because you don't want to promise something, then not be able to give it. But even to just say, "I'll do my best, but can't guarantee anything" or "Let's discuss this next session" or *something* would be better than nothing.

Or maybe you're just busy this morning. It's not an urgent email at all.

Or maybe you're thinking of switching to virtual starting tomorrow and are waiting to reply until you've made up your mind...

Love,
LT

ETA: OK, I breathed a sigh of relief now that you've replied. Are you sure you don't read here? Because you went with "I'll do my best."