If she has the gas for pain relief, and hands you the tube briefly to readjust herself... GIVE IT BACK TO HER Don't assume she wants a hug if she reaches out for it/you

Don't fall asleep while she's moaning and groaning, even if it's really late. It doesn't matter if she doesn't really need your help, don't do it unless you ask her permission!

...yeah, my hubby made a couple of mistakes