It's no problem at all, you can get a UTH from just about any pet store. The ZooMed or Exo Tera ones should be fine.
I haven't read this entire thread so I don't know what the deal is with this female of yours, but if you even suspect that she is sick. I would keep her in the tub seperated from any other reptiles that you have for a minimum of 90 days. By following quarinetine procedures you can help ensure that your other reptiles don't get sick as well. Anything that comes into contact with the female shouldn't come into contact with any other reptiles. This includes you. I suggest working with quarinetine animals one day then working with the rest the next day.
As I said I haven't read through this entire thread so I don't know if this has already come up. Just want you and your BP's to have the best chances possible.