I agree, they need to compromise. Trixie needs to realise that when you marry a man of the church you have a limited say in where his work will take him and that sometimes he might do better work in a deprived area.
However, Tom also needs to recognise that he's part of a pair now and he can't just sit and discuss their future with the bishop, with Trixie having absolutely no right to an opinion.
In real life I'd be advising them not to be so quick to part but to sit down and discuss the whole thing properly and work out how they can move forward as a couple and what they want for their future children.