Lexie - the same thing happens to me! Because even though we all live on the same planet, we are apparently (even clean & sober) mostly attending our own stories!!
My suggestion - text back - "I am so frigging proud of you!! You are an amazing human! I am grateful to have shared so much of this journey with you!"
Cause, that's what we most need to hear from the important ones...
Tah-dah! Because - truly - it is most meaningful to people to be recognized, & far less important that we don't remember a particular ten minutes (right with you, sister - I've missed a few ten-minute swells of others' stories...).