When you ask a girl on a date and she says she'll think about it...but if she says it in a happy way...talk about mixed signals, huh? haha Well, regardless, it's a hell of a lot better than a no...and the fact that she obviously was smiling and laughing the rest of the walk/conversation helps I'd say haha Reply as you seem neccessary, not so much a question...just a thought I wanted to write down.
Seems to me if a girl really wanted to go out with you, she wouldn't have to think about it. What do you HAVE to think about? You either want to, or you don't... I don't think it's complicated :-/
If she says she'll think about it, forget it. Why be her backup plan if the guy she really wants is busy? Have some self-respect.
Point being, there's other women who'll appreciate you wasting your money on them. Kick her to the curb and say "well, frankly, on second thought you could lose a few pounds."