Aries knew all along she might die. It may not be in the hands of Joaquin, but she was also a danger to herself. She lived for the present and for revenge. The deep hatred she had for the royalty of the Maganti was what fueled her to survive.
Day by day, even during her sleep, they occupied her. They were the ones who pumped her chest so her heart could continue beating. Their rotten souls which pervaded the air were her oxygen, and their insufferable existence gave her purpose. Honestly, she didn't know what she would do if they all went down.
She lived in the present, but in the future? All she could see was darkness. She felt empty inside, unable to look forward to what life had in store for her. Because at the end of the day, the reason she lived today was for vengeance, and once she succeeded, there was nothing left for her.