It’s not just a girl thing. Guys offer up their friends as well.
Happened to me with an old ex boyfriend.
The friend and I hit it off, but I stopped it before it got serious.
While I didn’t want to start anything with my ex boyfriend at the time,
I realized it would really complicate things in the future if we ever did.
In retrospect, my ex boyfriend says he was crazy for setting me up.
Unless this girl has some serious issues,
it sounds like a lot of people are over-thinking this one a bit.
She is clearly interested.
While her actions say otherwise, it may not be clear to her.
Or if they are clear to her, there may be some conflict.
(ie She doesn’t want to to get into a serious relationship right now.)
Offers to set you up with a friend.
She thinks you’re a good guy. (Not letting a good guy go to waste.)
Or she thinks you’re a particularly good match for her friend.
Shouldn’t always mistake conflicted with manipulative.