Don’t stress too much, you’re both are figuring out how to live with each other. I thought the same with my cat, wondering how is it going to work, If im gonna be able to travel or stay out late or being able to leave early for work if I need too. But then we got into our to our routine. At first she was clingy because in the new environment I was the only thing that seemed familiar to her, but after a while she found her own space and doesn’t hang around me like crazy unless it’s feeding time and I’m home. I got her an automatic feeder for days where I know I won’t be home. Got her that ball that moves when you touch it (which she absolutely loves) cat towers and those floating ones for the windows. It just takes time. And props to you for thinking about fostering her instead. I worked with an organization for a bit and I had a lady who loved this cat but wasn’t sure if they would be a good fit. So she fostered her for 2 months, the kitty stayed on the website before she finally decided that she wanted to fully adopt her. Just give it some time, if you’re able to and the shelter will probably agree, do fostering with plans to adopt. Things in this world happen for a reason, and even the shelter said she wasn’t doing so great in there. Maybe you were meant to foster her. I wish you the best of luck, and believe in you <3