By sharing this info with you, she could be testing the waters to see if she hits upon something which turns you off. Since it's a dating site, I'd say it's a good indicator that she would at least be keen to incorporate some of the things she's discussed. Probably with you, but this isn't a guarantee.
Usually been that way for me.
I would think it does, why not say I would love to do that with you and see where it leads.
nine times out of ten yeah women just don't tell guys their sexual desires unless they want them to know but you are talking through a dating website so she could be playing around