Re: She wants me to say 'please' for her number...
Keep your frame: you're not saying please for her number.
As long as she's asking for you to say please, you're not even interested in her number. Simple as that.
Don't even think about her as long as she's asking you to say please. She's basically a kid pouting, you just ignore it, or make fun of it ("haha, do guys usually fall for that? that's cute"), but you don't go with it, because you are the adult, you are in charge
Seduction is a martial art. Reading books and talking to experts is important, and helpful. But you won't progress unless you go out there and fight.