I'd like to say that was thought provocative, or clever, or even cute, but it was just plain silly.
It's obvious what the slogan means, and YES, to be pro-choice is the same as saying abortion is ok, even if you don't choose it for you.
You are right on one thing though, she chose to keep YOU, not a blob of tissue.
Choose away on whether you'll accept anything as far as the truths of God are concerned, you have a whole lifetime of choices, although compared to the eternity they will effect it's not very long.
Chrys