Miss Manners: ‘Oh, I didn’t put it on my calendar, apologies’

DEAR MISS MANNERS: Six weeks ago, a friend and I scheduled a meetup. We have not seen each other in person for more than a year. One day before our scheduled appointment, I texted her to ask where she would like to get together.

This was her response: “Oh, I did not put this in my calendar and we are leaving in a couple days to go overseas. Let’s reconnect in the fall. Apologies.”

Would it be rude of me not to respond to this text? Honestly, given that she did not even put our appointment in her calendar and did not reach out to reschedule or cancel when she made other plans, I don’t want to signal that I am OK with how lightly she treated our plan to get together.

At the same time, I don’t want to send a snippy response -- that’s not who I am. Can I let my silence speak for itself?

GE