Hi there. I’m not experienced in female panthers, but is she gravid? She should have a lay bin in her enclosure permanently to reduce guessing when she’ll be needing it. She could also use some more plants. You could actually combine the two...get a good sized plastic container at least 10-12 long/wide/deep, fill with washed play sand and if you add a bit of organic soil, you could put a plant in one corner of the bin.