Hello, Thank for posting here your concern. I understand you did the shot because you have never been exposed from someone with chicken pox. If that is the case, then you have nothing to worry about. The shot has viruses that have been attenuated are less virulent than viruses that are not. The virus in the chickenpox vaccine is generally incapable of causing a disease. On the other side, your immunity would need some time to create antibodies against chicken pox, so you are vulnerable from the virus as well. So my recommendation to your answer is, if you get in contact with someone with chicken pox, then avoid contact from your daughter-in-law. Otherwise no need for it. Hope that helps, Regards, Dr. Klarida