My son came out as gay and my wife is blaming herself. How can I help her?

Hi. My son came out as gay about 3 weeks ago and my wife is blaming herself. She looks at herself and feels like she could have done something to prevent it so that he could be straight. She says she is worried about his happiness. I am trying to reassure her but I don't think she believes me. I am fine with our son being gay and I am trying to be the best dad I can be. I want her to see that he will be fine and it doesn't matter if he is gay or not. We are in therapy together but I feel like she will never change.<br><br>&#x200B;<br><br>Edit: First of all I want to thank all of you for your kind words and helpful advice. Second, I want to clarify that I am disabled. I have trouble walking and I can't drive. I walk with a cane. I wasn't trying to hide this but since some people are questioning it I'd like to be clear. My wife is going to therapy and I am trying to get her to Pflag. She isn't taking this well and I am worried about her. If it comes down to it I will do what is best for our son. Thank you all again for your kind words and helpful advice.