Ex says she needs to think advice?

I dated a girl for a year and we broke up. We are both in our early 40s. We were hot and heavy for a long time.

I went to get my stuff yesterday (after a month) and it was hard to see her but I have talked about all things that we did to let things get stale. We cuddled then made out hot and heavy, and I stayed the night. She is confused, and has a lot to process but I am open to try and opened myself up to that.

I wanted to go hangout somewhere nice and talk, but she says she doesnt really know what she wants and needs time to think. I hated I did this but I went to open my old match account and there she was and online.

Seems to me that she wants to keep her options open while she thinks that doesnt sit well. How can she have time to think while having looking at others as an option

What should my approach be? I do not want to put in any effort if she is open to dating. To me that says she is not serious about at all, yet this literally happened yesterday.