You could respond with.
"Ah, damn autocorrect on my smartphone, been too damn busy to get to a computer lately. Not two girls, me and my friend. Meant to ask if the shirt makes "her" look fat. Also, forgot to put that "She" said "God I need to watch those carbs if I'm going to make it to Next Top Model". My man fingers are too big for these smartphones, lol. She's an aspiring model, but prefers having guys as friends over girls, I see her as one of the guys, kinda like a sister. (if she ever asks to meet this girl, say she moved away!). She tells me she feels more comfortable around guys then girls, hates the drama. What about you, do you confide more with girls or guys?" In my experience, a lot of girls prefer guys as friends as they claim they don't like female drama, caddyness (deep down they all love it). It's would be a good change of frame, then shortly after change the subject.