Just saying, if a girl did that to me, I’d assume that she was in the throes of passion and really enjoyed what I was doing, so I’d do it more. Don’t pull the hair.
I wouldn’t joke about it, or make fun, or anything. Tell her, yea, but not jokes.
Personally, I adapt to various styles, and try to accomodate them to what I like (either keep my mouth open or close, or pull apart, or do something else). Hint (usually) taken, adaptations done.
No, not just you.
Start making Cookie Monster noises whenever she does it.
OM NOM NOM NOM NOM NOM NOM NOM.
Bite that joint, bro. That’ll learn 'er, and quick. 
ETA: I guess I should make it perfectly clear that I’m kidding.
That sounds hot. If she’s that into it, I do not see a problem.
With your screen name, I’m not surprised!
I’d take control of the situation by restraining her a bit and controlling the speed, depth and intensity of the kissing. If she attacks the back of your throat with her tongue pull away, hold her face and show her how it’s done. Teach by doing - introduce her to sensuality and the art of the tease.
Failing that, introduce her to me. 
I was thinking of tazers
Oops double post because of poor mobile reception.