Her story in Legends was very dark and grim. The Clone Wars TV series is mostly light-hearted and intended for a larger audience that includes children. So, her character was made less cruel in the show. Also, she’s one of many characters to have their story changed from the Legends continuity. The writers of the show probably found it more fitting for her as Legends stories often become too extravagant. Her Canon persona is a lot more grounded than the bloodthirsty Jedi hunter from Legends.