Ha. it's funny because it all depends on how you are looked at by everyone else.
Like, for instance, if that happened to me, to any girl, they would just laugh it off. They know I am not the kind of person to just barge in and say shit like that.
But I'm not saying you are that kind of person. I think maybe you just need to chill out, not just with this girl, but with every girl. Just be an all round gentlemen.
Then they will eventually froth over you.
With this case, I think you may have to just talk to her face to face, don't keep sending "lolsry, waznt mi" messages. Confront her and be like, "That was my friend, sorry if I sounded like a cunt etc"
Then after she gets over that minor thing, you can start courting her like crazy again.
Ok bye.