there is no official Resident Evil game titled "Resident Evil: Death Island." It is possible that such a game could have been released or announced , or it might be a fan-made or unofficial project.
To answer your question accurately, I would need specific information about the character "Jill" and her past trauma in "Resident Evil: Death Island." Without that information, I cannot provide any details about how her past trauma might affect her actions in the game.
If "Resident Evil: Death Island" is a real game that was released , I recommend checking the official game sources, plot summaries, or forums dedicated to the Resident Evil series for more information about Jill's character and how her past trauma affects her actions in the game.