She asked him to go to her therapist, who told him wife was not asexual. They started couple's therapy with DIL's therapist.
Husband and I feel angry at DIL for hurting our son for so long. We were kind and supportive and sent them to therapy after the first incident, and then stayed out of it. We never asked them if it was better or not.
This time, we feel angry, and want to make him report to us about the sex. We think he should have separated from her. He did not. He agreed to try couple's therapy.
We feel like we cannot be around them, we are angry at her. Advice, please? We think she is probably asexual, as son's therapist suggested, and feel hopeless about her changing.