I agree. I always move my subadult female orchids from a deli cup to a 8x8x12 inch terrarium well before her final molt. A deli cup isn't big enough to accommodate a female's last molt, it increases the risk of a mismolt signifcantly. She needs a bare minimum of 6x6x9 inches of free space (not just the container size) to make sure she has enough room for her final molt but bigger is definitely better. Deli cups measure 4.5" across and 5.5" tall, not counting any substrate or branches you also have in there. So an empty deli cup can safely accommodate mantises up to 1.8 inches in length, less if you have substrate in the deli cup. (If you have 1" of substrate in the cup, then the size of the mantis can be no larger than 1.5 inches in length.) While it's possible for a larger mantis to sucessfully molt in a deli cup, it's better to be safe and give her more space than risk a mismolt.