So, I just got back from the TNG reunion at Toronto Comicon today and something interesting happened. Marina Sirtis made a quick swipe at Diana Muldaur she was talking about her friendship with Gates McFadden and said 'I was so happy when Gates came back in the third season! It was so nice to have an actor who didn't need her lines tapped up all over the set...not that I'm naming names"
Sirtis is just a jealous b*tch.
Muldaur got paid more than she was. Also, Muldaur was going to appear in the opening credits behind Stewart and Frakes. Sirtis opposed to that.
In 1999 Muldaur said in one of her rare interviews that her time on TNG was one big nightmare and that all the actors were in it for themselves. There was a lot of backstabbing and Muldaur left the set in tears sometimes because she was treated horribly by the cast, even Stewart.
Director Paul Lynch from Unnatural Selection confirmed this story saying Muldaur was a very nice lady, but the other actors treated her terrible. He felt very sorry for her.