Alice from all angles...

This is just a post for some advice on what may be making Alice have a clicking sound in her back left leg.  We have taken photos from all angles to give a better idea what kind of shape she is in.  Please keep in mind that we haven't even had her a month yet.  She seems to favor the leg a bit and tends to carry it a little on the stiff side and when we tried to get a photo of her bottom of her hoof she would not hold it up long enough.
Just so you all know the splotchy stuff all over her back and sides is just her rain rot treatment.

 
We are also adding a video (see below) so that you can hear the sound that she makes when she walks.  Sorry that it is sideways, we couldn't get it turned.  Also sorry for the background noises.

Who is Alice?

Well, Alice is my mid teen,Thoroughbred mare with a sorrel colored coat and mane with white socks and a white stripe that goes the whole way from her forehead to her nose . We recently purchased her from somebody who didn't have the money to care for her. She is a very mellow and sweet horse who needed love and care. She is a little underweight but we are working to make her as healthy as possible witch she is already looking a lot better then when we first got her.