She seems to be doing a lot better, thank you. Her leg is much straighter now when she's climbing the stairs, although once in a while she sticks it out to the side. She's running around when playing and doesn't appear to have the limp anymore or favoriting that side when she's walked a bit, so we're making progress.
I'm giving her until the end of the week before I call our vet for an appointment. If she's back to normal, we'll just keep a close eye on her. If I feel she isn't back to normal, we'll have her examined and x-rayed.
Thank you for the follow-up :)