Welcome to JustAnswer, I will be glad to help with your questions.
I do not believe that your son has anything to worry about; there are no charges that she could possibly file against your son with respect to the computer; your soon to be "former" daughter in law is scared because she is beng found out and will be exposed.
I do not think she could have done anything even if they had not purchased the computer together; as I said, she is scared because she is being exposed as an adulteress and she i taking the approach of "the best defense is an offense" since she cannot defend having an affair.
My best to you and your son
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Thank you and Good Luck!
ANDREA, JD, LL.M., Taxation
Member, NY & PA Bar
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