Congrats on your new baby!! Thankfully, at 4-6 weeks of age, they are a lot easier to feed and you don't have to be SO cautious as you have to be when they're newborns. I'm sure she'll be fine!

Do you know where your co-worker found her? I would be careful about letting her around your cats until she's tested for feline leuk, etc.

CONGRATS again and I can't wait for pictures!