When does your chemo end, Lily? Counting down to completion usually helps me when I'm down. You've had a really UP weekend so a reaction is not a surprise.
Your friend should have asked before offering. Maybe she can join you another time. Maybe she's just not comfortable with and it is probably better and kinder to stay away.
Meantime, some rest is not a bad thing.
I am sending a bit of Maine hideobilia to Pete. Maybe that will cheer you up.
Love,
Mary