After Ivy noticed the way Gabe had been avoiding her following their makeout session in his bedroom, she had decided to make it easy for him.
Since he was bent on avoiding her, the least she could do was to get out of his way. It wasn't like they both needed to take care of Liam at the same time. The house was big enough for them both.
She drew a timetable for them on when and how to care for Liam. That way, they wouldn't have to run into each other or have any course to cross paths since that was what he wanted.
As far as she was concerned, there was no need for him to stay locked up in his room all day just because he was avoiding her. It wasn't like she was going to bite him.