I see that you posted on the HIV prevention forum. Honestly, they are the best ones to answer this question and it appears that Teak (who is HIV positive by the way and knows what he is talking about) is labeling this as no risk. I have to defer to his answer.
As an aside, doctors will no longer be answers questions on the regular forums. They will only be answering them on the 'Ask a Doctor" forums.
The first question is do you know this woman's HIV status?