There are a few variables here we just don't have.

*If this was a previously discussed hard limit, then you really need to re-think the relationship. If your limits go out the window when she is drinking, i suggest you run far, run fast and don't look back.

*If this was a situation of "I didn't really know this was a hard limit until you brought it up," then you need to talk with her about in a neutral, non-sexual setting. (And when she is sober.)

Just my tuppence,
rose