The original BatMan feature films made the viewer suspend disbelief. It is NOT explained how Felina Kyle got such acrobatic skills. It is NOT explained how Felina Kyle survived the fall of many stories after being thrown from a window by her boss Max Shrek, or how she shrugged off another huge fall, several gunshots or electrocution on a main power line !
"Batman & Robin" (Mr.Freeze, Poison Ivy & Bane) was badly made, and so negatively received, that a sequel (with Scarecrow) was cancelled before filming, the star refused to make any more BatMan movies. They had to restart ,reboot the series.
The original BatMan feature films made the viewer suspend disbelief. It is NOT explained how Felina