Ava really didn't get it. The blood bond hadn't been broken and Kael had gone back to his life. There wasn't a good reason for Zeldris to keep taking care of her like this.
He involved in every aspect of her life since he was her roommate and worked with her. She still struggled with what happened but at least she didn't have to do it alone. She couldn't even imagine dealing with all of this on her own.
She couldn't even go to therapy about it because who would believe her? Fairies, demons, immortality, blood bonds…it all seemed impossible.
At least she was doing better than she had been right after Ian died. She had been a real mess then.
Zeldris had taken very good care of her when she couldn't handle things on her own but she expected that to stop when he went back. Then he didn't GO back. He was still treating her with the same amount of care now as he had been then even though the circumstances were different.