We can joke about this, but I really don't see how any vote on ACB helps Collins:
Yea: she angers Dem/Indy voters who bought her pro-choice Republican schtick
No: she angers loyal Trump voters in the state, blowing up her coalition
Present: she angers literally everyone for sitting on the fence
*skips the vote*: she breaks her perfect voting streak and Gideon hammers her on 'not showing up to represent Maine'.
To the best of my knowledge, ACB is probably good for Graham, but awful for Gardner and Collins. It's like a reverse Heitkamp-Kavanaugh vote, there's just no vote that doesn't seem to make re-election harder.