Presently in college, in an relationship(2+ months) with a smart cute girl.

I am not a drinker , but GF is quite a drinker. Before getting into the relationship I stated that I don't want her to be drinking more than once a week,and she was alright with that.

Yesterday we went clubbing and she got wasted. Today we went out to a bar with a couple of friends. I told her before hand that I don't want her to be drinking again, cause of yesterday.

But after we went she still ordered a drink. So , after I had my food , I paid my share and left that place.

Was I right or did I overreact ? I am new to all this.