"These are typical 'what if?' questions -- i.e. wondering whether the usual answers don't apply because of special circumstances. But I would suggest you look at it this way: no cases of HIV have been known to be acquired...by fingering; and given the billions of such events that have occurred over the decades, there must have been millions that also involved blood contact, sores that could have been exposed, etc. And yet still no known cases. So logic says that these circumstances make no important difference."
I would add that the chance your partner had HIV is extremely low. What makes you think she might be at risk? Among average sexually active women in the US, fewer than 1 in 1,000 are infected with HIV.
As far as is known, HIV is not transmitted through wounds except when the wound is caused by an HIV-contaminated object, e.g. through shared equipment in injection drug users or sharp instrument injuries in health workers. To my knowledge, transmission of HIV has never been reported to result from exposure of an existing cut or wound. If it happens, it probably requires a fresh, actively bleeding wound. DR HANSFIELD
NO ONE HAS EVER CONTRACTED HIV FROM FINGERING...CUT OR NOT CUT
even my finger was bleeding?
No masterbating someone is not a risk, with or without a cut.