She hadn’t once thought about Lisa, about how her friend would feel if, by some miracle, something happened between Amy and Quinn.

And no, Lisa’s betrayal of Quinn did not cancel out any obligation Amy had toward her friend. Two wrongs didn’t make a right.
Her Best Friend - Sarah Mayberry

76% — What? WHAT?! Who gives a fuck about Lisa? Who even knows what she's trying to pull showing up here. And what obligation? She cheated on her husband for two years then left him. She destroyed her marriage. Her choice. Now she's going to brunch with her? Arghhhhhh!