I disagree with you on loads of things about BB5 this year LEE

. That's a turnip for the books!
I think Becki DID have an easy choice. I can't think of any other situation in previous series of BB where a housemate has been allowed to choose themselves in an awkward situation. And yet Becki had that chance.
OK, so she'd only just gone into the house, but her choice suggests to me that her motivation is definitely to win or get as far as she can. If she was there to have a laugh, she wouldn't have minded being up for eviction.
But to nominate someone else, knowing that they would be automatically up for eviction, is the more difficult choice.