Chick with swollen foot, HELP!

[TheChickyard]

I got an americauna chick a couple of days ago and noticed she was limping
Her foot is swollen and she favors one leg
She does eat and drink normally from what I can tell but she spends most of her time sitting down or sleeping, I dont think its bumblefoot because there's no sore on the bottom of her foot. I need help finding out what this is so I can treat her

 

[TheChickyard]

Here's a picture of her foot,

 

[Naomi Cartner]

That does not look like bumblefoot - it looks like she has been stung or bitten by something. Did you find out what was wrong?