IF she has a blood borne infection and IF she pricked her finger deep enough to draw blood, and IF you pricked your finger with the same pin deep enough to draw blood you may have had a small risk for hep c.
In the case of a health care professional who experiences an accidental needle stick involving a patient with known hep c the odds of transmission are about 1.8%.
So yours are about IF, IF, IF then less than 1.8% for hep c.
So while I believe your risk is relatively low there is no such thing as perfect safety there is nothing that is zero risk in the world.
If you are concerned get tested for hep c antibodies. Wait 6 months post a concerning event to have total confidence in test results. The reason for waiting that long is if you have a compromised immune system it can take up to 6 months for your body to create enough antibodies for a good test result.
Meanwhile is there anyway you could wear some sort of gloves for example latex to help reduce the risk if an accidental stick?