Rosey and Cass were hosed from the beginning when they learned to talk.
I guess we should have suspected they'd have trouble, what with B and I having such different accents,* but it's not the type of thing you worry about when you decide to have children. You just don't think about how the differing ways you pronounce vowels**, for pete's sakes, are going to screw up your children's pronunciation.
Which is why my daughter says Ub for up. (And gets all offended if you call her on it, because to her head? Totally speaking clearly.) And woe betide you if you call her Ub. After her head stops spinning around, she'll fix you with the most indimidating glare she can muster and say 'I said UB! My name is not Ub!'
But it's fun to say. And it's kind of fun to wind her up, too.
*My mother: Y'know, honey, you're starting to sound Canadian.
Me: Really? (thinking: Then why oh why do I have to repeat myself so often?)
later, the same day:
Kids at Cass's school: Your Mom talks funny.
Cass: (Totally unconcerned) Yeah, she's from away.
**I'm sure you think I'm joking. You should hear the lengthy SCAL-op versus SKAAL-op debates that B and I can diatribe out. We are not pretty.