Girls, Ladies why would you tell your daughters not to confront their father about his affair?

Dad's been cheating for years. Mom and teens found out. Dad is still cheating 3 years later. Noone ever confronted him.

Mom must have told kids to keep their mouths closed. 1 kid went to therapy.

Dad has occasional alcohol issues.

Why would a wife tolerate the affair and tell her kids to tolerate it also without ever confronting dad?

Updates
1 y
It sounds like she's biding her time?
Girls, Ladies why would you tell your daughters not to confront their father about his affair?
Post Opinion