Your lay bin substrate needs to be able to hold a tunnel. I’m not 100% sure from looking at your pics but that looks like it may be too dry. I’d get some play sand and if it is as dry as it looks add some water until it holds a diagonally sloping down tunnel (not straight down like a well). I kind of dig down and sideways to test mine. They tend to dig all the way down, you don’t want the substrate to fall back in on her as she digs. If it’s already that level of wetness please excuse my misinterpretation of the pic!
It’s really important that her supplementation be corrected, as well as temps so she can use the nutrition you give her. Post clutch nutrition, hydration, and calcium are very important for her to recover. It’s a lot of work for our lady chams!