They let her know he wasn't her "real" dad when she was a little girl.
It stung, at least for a while. "I always thought I was my daddy's 'real' little girl. I guess I was afraid that might change."
But it didn't. Not even for a moment.
This dad - legally her stepdad until he adopted her - treated her as his own, no different than he did her two younger siblings, his biological children. Like a "real" dad, he made her take out the trash, set the table for dinner, clear it afterwards, clean her room.