Determinator Batman really took a beating at Dahl's expense. She threw a smoke bomb from at him, had her henchwoman Miriam beat the crap out of him, shot him with tennis balls and finally pistol whipping him with a concealed gun. Yet he still tries to reason with her.
Dynamite Candle: Baby uses a dynamite candle in an attempt to kill Spunky who's actually Robin in disguise. Spunky, tied up and failing to blow the fuse, leans over and uses his teeth to grab the dynamite and toss it safely away.
I Am Not Spock: In-Universe, part of what drove Mary Dahl insane was that nobody would accept her as anything but Baby-Doll. Her still looking like a little girl had something to do with it. And she couldn't even return to the role when they cancelled the show and fired her for leaving in the first place.
Meaningful Echo: Baby's Catch Phrase on the show (after causing some mayhem) was "I didn't mean to!" à la Bart's "I didn't do it." At the end, she's hugging Batman's leg and crying, saying simply, "I didn't mean to..."
Noodle Implements: In a clip from a fictional wacky 1950s sitcom, Baby-Doll had managed to cause a huge mess. Somehow, it involved the dog, a zebra, a giraffe and a pair of Scotsmen on roller skates.
Villainous Breakdown: Mary again, after seeing a funhouse mirror showing her as she might be, without her condition:
Mary: (in an adult voice) Look! That's me in there. The real me! There I am. (her face drops) But it's not really real, is it? Just made up and pretend like my family, my life, and everything else. (turns to Batman, shaking, doll/gun pointed at him) WHY COULDN'T YOU JUST LET ME MAKE BELIEVE!?!