11 week old puppy has concerning leg

I have an 11 week old husky pup named molly who has already suffered from parvovirus but got through it (thank god) but she’s had this issue with her back left leg since I first got her. She can walk and run but I can noticeably tell she favors her back right leg over her left. This problem is extremely noticeable when she try’s to scratch with her back left leg, it just kind of flops and i would almost say it seems limp when she try’s to scratch? She still has feeling in her foot since when I grab it she notices and she can apply pressure when she tries to push my arm away when playing with me on her back.
Im just trying to get to the bottom of this and any thoughts could help.