Hi,
I am really sorry to hear about the incident.
If she wasn't pricked with that needle, you need not worry and just washing your hand with water and spirit will do.
However If you are sure she is
HIV positive and that the she had a prick with the same needle, you require URGENT attention immediately.
1.First of all, keep your hand (puncture site) under running water immediately for full 10 minutes.
2. Apply Spirit locally.
3. Visit a doctor immediately as you require a course of anti retroviral therapy.
This should be initiated within an hour.
Remember, there's only 0.32 % chance of you getting the HIV virus if you were pricked with the same needle which pricked her. However, you need to take all the above mentioned measures without fail.
Hope this information helps. Feel free to ask if you have any doubt.
Ensure precautions next time when dealing with HIV positive patient.
Wishing you the best.
With warm regards,
Dr. Sridhar Reddy