I see a lot of Doms (or those who are more dominant), but not always as a bottom. Many Doms have desires for certain activities that they would never ask their personal subs to do for them, so they come see me. I don't consider they are submitting to me as much as they are just bottoming for certain activities.
I don't require submission, as such...I require a respectful attitude and a willingness to play, things I get from both subs and Doms, and I love when I get another switch to play with!
So long as you maintain your respectful attitude, and don't constantlly try to top from the bottom, I would think any Domme would be happy to see you. If you are concerned by her statement, then ask her, not us, and work with her to have the attitude she prefers.
Now to your sounds question. Is she planning to use the wand ON the sound once she inserts it? I have tried that a couple of times and my guys don't seem to really notice the difference. You could gift her a vibrating sound to use on you, I hear those are lots of fun

If she is just going to use the sound on you while you have sounds inserted, I would suggest you not wiggle around too much.
K