A day later, the house of Zhasks was in ruins. Not because of Leon's and Darjud's plans, but because Otiga wanted it to be that way. After last night, Otiga did not have a reason to stay on the planet anymore. Especially after Gabriel sided with Darjud and the loss of her trust in her soldiers.
Since Ashton and Anna had to leave the planet as well, they offered Otiga a ride, to which she readily agreed. She might have lost her influence over Euphoria, but she was still an asset. She wasn't a monarch anymore, but she was still the founder and owner of the largest intelligence networks in the Orion arm of the galaxy.
By having her tagalong, Ashton essentially had a walking and trustworthy source of information with him. It was an opportunity only a fool would pass up on. This was a major reason why Ashton decided to help her.