TRYING TO FIND HER OWNER (see description)

We are in an Airbnb in Philadelphia, PA and this beautiful cat was begging at the door.
Yes, we've let the owner know, but we couldn't just leave her out in the snow... She seems to be from a decent home, but was clearly in need of food and water.
Both myself and my wife have experience taking care of cats so we aren't worried about that part. We are worried, however, about the lack of money; we're barely getting by so the chances of affording all her needs are pretty slim.
She's very clingy already, so if we can't find her original owner(s), she will do best in a home with someone who'd be able to give her all the needed attention.
Important Notes (will update as needed):
• Young; still acts a little like a kitten
• Restless; shows signs of physical discomfort making it difficult to lie down for long
• Upset Tummy; could be the cause of the above
• Amazing Temperament; no fear of plastic bags, loud noises, etc.
• Flinches at Sudden Hand; she does, however, flinch a tiny bit if you go to pet her too quickly
• Loves Towel; she really loves lying on bath towels...