Pick up is more of an art than a science. I wish it was a science. Then it would work 100% of the time.Just a couple comments on your IOIs.
She asks you your age (make her guess)...make her guess? that's ridiculous. Do you guys like it when a woman makes you guess her age?
When she is sitting next to you her leg touches yours...and she doesn't pull it away. Some of us are leggy, the touch can happen accidentally.
The guessing routine is about being difficult. Guys who comply too easily or don't put up resistance are viewed as puppies - cute but get boring very quickly. It's also about demonstrating higher value and changing the power dynamic. Now she's putting up with my little shit tests, not the other way around.
And for the leg touching, if she briefly rubs against my leg then quickly pulls it away, sure. I'd agree, it was by accident. But one of IOI examples talk about her not pulling away in general. So if her leg rubs or is pressed against mine and she doesn't pull away, I'd say that's a IOI.