Is there any reason to suspect that she is a nursing mama? I have watched the video quite a few times, and see no evidence of that, but it is hard to see.
The reason I ask is that if she is not nursing, is capturing her and letting her rest and recuperate in a release cage an option worth considering?
Also, if capturing is not an option and it does turn out to be an abscess, it is worth noting that giving antibiotics via pecan works quite well. And in the case of your friendly squirrel, giving her the pecans looks like it would be easy enough.
https://thesquirrelboard.com/forums/...ured-front-paw