No risk. Next to this, I can understand it was a shock to hear she is hiv positive. But keep in mind hiv positive is something else from aids. Also I hope you don't act differently from before as you don't have any risk of transmision. Only with sex or much blood(and if on meds and very low viral load even the sex and blood risk much lower) there is a slight risk. I really hope you will act with respect as having hiv is already a big burden.
No,I don't see any reason for worry.you are safe.