I think it's worth a try. If you can afford to pay her the fee and get them to a vet for a wellness check. If you have any problems with them you could always contact a rescue for help and be the foster mom until they are placed? Just some suggestions. I wish like crazy I could hurry up and purchase my home! I would love to have a big place and a lush yard to foster!
I hope you can help, if not maybe suggest to her some rescues in the area. I know there is a great one close to Dallas called yorkie haven rescue
www.yorkkiehavenrescue.com you could call for advise.