Here’s the problem we face in this country. When a child comes out as an atheist, a parent immediately views the situation as a parental failure.
This woman says she tried to instill her children with “good Christian values” and the problem I see is the fundamental question of what “good Christian values” might be.
If she wants her daughter to treat others with respect, she can do that if she is an atheist.
If she wants her daughter to value her life and strive to live it as best she can, she can do that if she is an atheist.
If she wants her daughter to discriminate against people based on their sexual orientation, she can do that if she is an atheist. She probably won’t but she can.
Instead of being upset, this young woman’s mother should be proud. Her daughter is growing up and making her own choices. No parent will like every choice that their child makes but at some point, we all need to allow our children to make them. If her thinking wasn’t so clouded by her religion, she might recognize that she hasn’t failed raising her daughter. She succeeded.