"What is it that excites her and is the direction and anticipation also a turn on for her?"
How do we know? Ask her! Some subs are sexually submissive only, and aren't really interested in having a Top tell them what to wear and how to act, unless those things are directly related to the sex acts that are to follow

Some submissives are more service oriented and love to be told how to dress, how to act, what to prepare, etc. in order to satisfy their desire to serve you in some way. Some submissives are all about taking whatever their Top dishes out, be it spanking, bondage, etc.
The only way to know what excites her is to ask her! When I bottom for someone, it is usually because they want to do something that trips my submissive trigger, and I am quite comfortable talking with a prospective Top about what I like...there are things I have no interest in bottoming for, and some things I won't bottom for for safety's sake, but the only way to find that out about your girl is to ask her!
And, if you're lucky, you won't hear "I want to do whatever pleases you" LOL !!
K