I'm praying that all will be well. I'm so glad you took her to the 24/7 where she will get round the clock care.
It's so very hard at this time...I've been through it myself. Make sure she has something from home like a teddy and a blanket to lay on and something with your scent on it like a worn tshirt or some stinky socks. It makes the trauma less stressful knowing your scent is near to them.
Please please keep us updated.
I'm sure they'll suggest an ultrasound there, if not PUSH for it ASAP like by Monday.
Cats only have nine lives because they stole them from dogs!Teehee