No risk.assuming you went to dermat clinic with consideration of medic attic,no they dont reuse razor blade. Your 'ARS Symptom' too soon.
That's the problem.I am not sure whether she used a new blade.
As i said before no reuse if you went to clinic. If they use razor blade that have blood on it then you will know that they reuse it.but you also need to know that once the virus went to the air, the virus will die.