Most Helpful Girl
If this happened to me I would constantly know and be aware that you were into me. This doesn't mean you should avoid her, it just means give some distance but definitely talk to her. If you don't you will lose contact. I just had this awkward thing happen with a guy 2 days ago and i talked to him today and everything was chill so don't stress.
Most Helpful Guy
You kind of are a little wuss for not just going up to the girl you liked and talking to her. From what you describe it doesn't sound like your friend screwed anything up because the girl you like isn't interested in a relationship.
Next time just take the plunge yourself