Batman: The Ace of spades [A JOKERS DAUGHTER STORY]

Melanie Ace Napier, the daughter of the Joker and Harley Quinn. What will she do when she is adopted by the one and only Bruce Wayne, only to find out he's also Batman?

(Context: May be a few changes in the Universe but there will be few changes not loads)

Dicks age: 24
Cassandra's age: 21
Jason's age: 21
Tim's age: 18
Damian's age: 15