Shrug

I called and said, "okay, tell me about Verizon."

Mom: Oh, you're too late. The letter has been written. Irina spent the entire week that we were away writing it...
A.: Then why did you ask me to write one yesterday?
Mom: Hers hasn't arrived yet. In case it doesn't, I need you to edit the one I've written. I spent hours and hours writing this when you were away!
A.: Okay. [Is she implying that I should not go on vacation, in case she needs me to write letters for her, or more likely, that it was selfish for me to go on vacation given that she had letters for me to write?]
Mom: I've lost sleep over this. They've sent a collection agency after me because they claim I haven't returned the router, but I returned the router... you know what, if you don't want to help me, fine, don't!
A.: I just said I would.
Mom: I'll send you the letter.
A.: Okay.
Mom: I don't like your tone of voice! You're superior and snooty. You're not... pleasant to talk to.
A.: Sigh.
Mom: Bye.
A.: Bye.