haha, I love it, it was a noble attempt cbt.. but just like everything else, see what works and keep doing that. It doesn't appear that suggesting you want to dominate her makes the "it works list", so file it away.
I definitely see where you were coming from, for guys I think the opportunity to act out porn scenes could be a turn on, but I don't know that woman see it the same way. Also, I've seen some stuff that wouldn't turn me on in real life, so it may have just been something she came across.
May be something you can discuss in the future, when things are better (fantasies, etc), but I would let that be for now.
As for referring to someone as "darling", do you know who the person is? If that was the only thing said, I don't think it means too much in the bigger picture, but I do understand how/why it would bother you.
I think dear, darling, hun, are used pretty casually when talking to others of the opposite sex, I don't agree with it (and have been uncomfortable when others refer to me that way), but it does seem to be pretty common.
M - 9 1/2 years 5/5/16 - Bomb drop - 3 week EA 10/31/16 - We sold house 01/10/18 - D Finalized