My daughter’s elderly cat Astra seems to have sprained her left front paw tonight and is acting strange. Her leg/paw isn’t swollen, but she can’t put any weight on it without falling down. She’s meowing a lot and walking in circles. At one point, she was hiding by my daughter’s desk which is unusual, she seems to be confused, and has no appetite. We’ve read how cats don’t metabolize aspirin or nsaids very well, so we don’t want to give her any. What can we give her and what can we do to comfort her? Is there anything we should look for? Is her behavior typical of a feline in pain? Thank you for your help!
Edit: Now she’s pressing her head up against things.

Our three year old spayed kitty Serafina (longhair buff and white tabby, 11.5lbs, utd on all shots) expelled her first hairball a couple days ago, and it was huge. Then she hacked up a couple smaller ones. The problem is she’s still throwing up. It’s only once or twice a day, never much in it, usually mucus or foam, sometimes a little digested food. Other than that her behavior is normal, her appetite was normal but has waned a bit, her drinking seems normal, but because we have multiple cats I don’t know if her bathroom habits have changed. There’s nothing alarming in the litter box though.
I’ve already sent an email to All Paws (it’s the only one we can afford with all the animals we care for) to make an appointment for her, but they’re not open on weekends and the auto-reply email said they have to go through a lot of emails on mondays so it may take up to 48 hours to even respond to my appointment request. I was sure to include all the details of her ailment in my email to them.
My question to you is this: In your professional opinion, is it okay to wait for their response, or should I seek an immediate appointment elsewhere? If so, I’d prefer it to be with your office. Other than the throwing up, she seems okay. She’s a low energy cat to begin with, so if she was lethargic it’d be hard to tell, but she seems normal to me. What should I look out for?
I’m just worried, I tend to panic over the smallest things. Thank you for reading all this.