Marlene - accented warrior?

I've spent three days this week on a course for work about leadership and creativity. A model of 4 archetypes of leaders was used - Analysts, Warriors, Creatives and Mothers. I think Marlene's default setting would definitely be the 'Warrior' archetype.

Warriors lead assertively, with a clear vision of where they want themselves (and everybody else) to get to. They aren't afraid to take risks or hurt the feelings of those they lead and they don't avoid confrontation. Warriors are more likely to be men than women. At their worst, Warriors lack empathy towards others and can bully. They are not good at tolerating failure or learning from their own mistakes. I think this final point is a defining feature of Marlene, she shies away from introspection and so risks never learning from her past mistakes. She lacks the ability to empathise with Joyce and struggles to acknowledge that Angie is, by Marlene's terms, a failure - 'She won't make it.'

I've also this week, rather optimistically, been starting to learn the lines for the dinner party scene (Act One). I'm having trouble working out Marlene's 'voice'. Is there a trace of a regional accent? There is mention of the family being near Ipswich yet Marlene says 'It's quite down here.' when comparing where Joyce lives to London. I need to learn the lines in the character's voice. I'm worried that an RP accent will just be my own voice and I think the character needs something diffferent from that. I'm quite an audio learner so this is a big hook for me in terms of something to hang my characterisation on.