I agree with a crystal clear under standing between you and your partner, but if your partner or the pro are not interested in meeting one another then you shouldn't force one.
After all, we are talking about a professional Mommy here, Someone who does this as a job (part time or otherwise). You and the Mommy/Daddy need to have clear agreements about what is acceptable in scene, but most likely they don't care too much about your life away from their business.
Now, I must add that never having been to a pro I may be talking through my bonnet. I'm sure that pro come in all personality types and some would be perfectly willing to meet and talk with both you and your SO.
Just remember that it's not just your fetishes you can force on others, it can also be you own idea of "What Is Right". As with everything else if you are not comfortable with how a pro wants to handle thing, find someone else.
Sorry for preaching, I'm just REAL big on consensual behavior. My wife and i have been married for 15 yrs and though we are both interested in BDSM she is just not comfortable going to any kind function. I've asked if she wants to go to munches, dungeons parties etc. and she just doesn't want to. She doesn't mind if I go and even likes to hear about it what went on.
Everybody had different "choke" points. Don't force them, but know the rules for whatever relationship you are in and DON'T break them! Follow this and everyone will be happier in the long run.
Sissy Dahli
Safe, Sane & Consensual the only way to play!