She thinks she’s punching

I don’t know how to address this with my partner, we have been together now for nearly 4 months and I can honestly say I see a future with her she’s kind, loving, supportive and most of all perfect in every way to me. Now she had a staff party Sunday night which I picked her up from and I’ve never seen her this intoxicated before however that’s not what bothered me what did is the fact when I went into the pub to collect my partner and help her to the car everyone was saying and k quote “ omg your so right you are punching” me and my partner have spoken about her saying that she is before however I don’t know how to make her feel like she’s not because in my eyes she isn’t.

How can I make her feel like the more perfect person to me ?