Help please! We got our first mantis, a European, on Friday. She ate 2 crickets and a locust in the first 2 days then then since Sunday she's just been hanging upside down from the roof of her enclosure. She does move around, but only on the roof. I've tried offering her a bug in tweezers but she doesn't seem to like that but when you're only an inch long those tweezers must look pretty big!! I've put crickets in her enclosure but she doesn't come down to hunt. I did think at first she might be getting ready to molt, but she's been there for nearly 4 days now, which seemed a bit long. Should I be worried?