What if the toy has already been used and was only washed with water?
Do you think its possible that she has contracted something? Not so much HIV but Chlamydia, Gonorrhea, or Syphilis.
The toy has already been used is she at risk?
Yes, it's certainly possible, and sharing anal toys especially is never adviseable. The woman you're speaking of should probably see a doctor or go to a clinic, explain the situation, and be tested for everything. If nothing else, it'll give her peace of mind. Then she should read up and talk to the doctor about the risks, cleaning, and general safety.
dont know if you want this info or not, so here goes...
a good friend of mine has come up with Chlamydia 2x... now, shes very careful to wash her toys with soapy antibac soap, and every couple a weeks shes lysol's them to. {of course after the lysol's on for a while- impretty sure she washes it again...