Yep, sad but true. This fantasy world of theirs works best when they can block all of reality out. My W ignored my 3 kids for months. She saw them every day (we share the house) but she would escape into her online world and leave them to their own devices. She, too, always said she would do anything for her children.
She has since become more attentive to their needs, but not as patient as she once was.
Keep strong for your D and give her whatever support she needs to help her through you H's insanity. Don't make excuses for him and don't "beat him up" - just make sure she at least feels love coming from you.
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Me: 39/W: 37 D13-D11-S8 M/T 14/20
EA confirmed: 9/13/07 D-Bomb: 9/19/07 OM Gone since 12/18/07 W wants to fix marriage: 3/16/07