Yikes it is tough for me to remember specifics from those days. I will say that I did have an allergic reaction on my face! I was allergic to the tape used to keep the oxygen mask on and by the time I woke up I was already broken out in an awful rash.
I do remember an odd feeling of getting hot when I overexerted myself after surgery. Overexertion can be caused by things as small as moving around in bed in a bad way when you’re in a state like that. For me it was a sign I was getting a little faint and needed to rest. I definitely remember getting up to use the bathroom and coming back and being drenched in sweat and feeling all kinds of wrong. I called the nurse and they thought it was part nerves part shock. I gave it a few minutes and felt better.
Anesthesia does weird things to you.
If she feels hot for an extended period of time it’d be worth putting a call in. I also find it a little alarming to get outpatient surgery and be unsupervised so soon after.