The angry woman at the wedding party [spoilers C1 E35]

>! In C1 E35, during Gemma's wedding party, an angry woman storms in shouting about how the Pale Prince in her boyfriend.

Obviously the story takes a turn from there, and she never gets mentioned again. Has Murph ever talked about the woman and what he had planned for her? I've listened to C1 and all the short tests multiple times but I can't recall anything. !<