I HIGHLY recommend seeing Mistress Jung. Her disposition will make you comfortable. If not in the first few seconds then in the first few minutes. Guaranteed!
I recommend choosing the Mistress that you are most attracted to because they are all very skilled. I also recommend sending an email to booking and they will take very good care of you. I think it's natural to be nervous, but you don't really have to be because NONE of the Mistresses will take you farther than you truly want to go. They are all very respectful.
Just a random comment. Despite being uncomfortable with you, I'm comfortable with you. I wonder what Mistress Koi's "trigger" was. I can't ask though because that doesn't belong in public (profile page).