After an update last year that changed all cherries to Gummi Dragons, I felt that it made less sense for Tiffi to be on the HUD for levels where you need to rescue them because they're established to be Denize's children, and I figure that she would want to closely watch you do your job saving them. So, I want the HUD on these levels to show Denize instead of Tiffi, as shown on the doctored mockup screenshot below:
And once you beat such a level, show this pop-up picture of Izzy celebrating yet another successful rescue of her children against the translucent dark blue background that usually appears.
She looks overjoyed to see her kids back safe and sound!