Yeah she married a Maguire.At the time of the scene you're thinking of she was also Frank's stepdaughter!
(
riverghost servicing your mum since,
Wed 6 May 2009, 12:28,
archived)
Filthy northern bastards!
Redsushi! Whoop! Whoop! Yes, that one!,
Wed 6 May 2009, 12:29,
archived)