Good examples, PistolPoet!
My two worst examples:
The Maris-Murder plot: Coming into Cafe Nervosa and ignoring Niles completely when tries to kiss her; being full of resentment towards him whenever he tries to help the woman he, after all, spent 15 years of his life with. Insisting his ex-wife has put them through hell when Maris, in fact, never did.
ATDRAWTS: Only a days after humiliating the people they claimed to love, Daphne is less then supportive towards Niles. Resenting him for not having filed for divorce immediately after they run off, ignoring completely what that would mean for his wife and showing virtually understanding or compassion towards Mel - never mind just having ruined her life . Donny seem to have left her mind completely after he dropped the lawsuit. Her excusing herself out of an argument with Niles faking a 'splitting headache' is diva-like and her questioning their relationship at such an early stage is both diva-like and emotional blackmailing (I would not mind her behavior 6 month into the relationship, but so soon?)
I would never say she's become a heartless woman or that she does not love Niles. But all in all it shows a woman with little understanding or compassion towards people who are not directly in her circle of friends or family. With her kookiness gone, her self-centered and domineering side shows even more (and I disagree with Niles standing up to her in The Placeholder for example, he does nothing to stop Daphne trying to trick the maid into a confession with the fake tape. The only time I can remember him showing a sort of spine is in Murder Most Maris, when he shuts them all up after his breakdown ).
She is warm & kind at times, but I am not watching Frasier for lovey-dovey relationship stuff or heart-wrenching drama, but for the comedy and a lot of the Daphne-comedy is gone after S8 (along with a lot of comedy in general, but that's another thread )