Yeah, that is sorta odd for her to say that considering your gf says it. How does the columbian chick know that line? Have you shared that info with her? Maybe she knows your gf and you don't know it?

So, going along with the theory that we should always assume attraction, I would say that her reason for saying "stay large and in charge" is that she wants you to feel the same level of comfort with her as you do with your gf. She wants to be your girl. She is putting herself in your gf's place by using her words. Just like inserting herself deeper into your world.

Did you ever tell her you had a girl? Or did she have to hear it elsewhere?

She definitely knows about the girl and the text from New Years was her letting
you know that you got "no inns in her casa".

As you said, she doesn't fall for the usual so, bro, she doesn't want to look like to office slut.
It's not going to happen. If you cut your chick off, this girl will reconsider BUT she's going to want
to make sure that SHE is not the reason.

THere is no way you're bagging that while you have a GF. She lost respect for you and now
you've got to figure out how to get it back. Maybe text her something random to break the ice
just to see if you still have an in. "Did I do something to offend you?" be ready for her reply.

Congratulations?