This sounds completely unreasonable. I understand anxiety and maybe a little worry but it is unrealistic to think she did something intentionally to the fruit. You will not get HIV from eating fruit nor any std. Hepatitis A can happen from fecal matter being in water (if she washed the fruit in tainted water) or if she had fecal matter on her hands. However, hepatitis A is self limiting and doesn't cause chronic infection. And it would be unlikely that this happened. Here is some information on hep A. https://www.cdc.gov/hepatitis/hav/index.htm. I would not be worried at all personally and everything else was no risk.