Is she gravid or fat?

Hello! I am a first time scorpion owner. I have had two that I bought together for 3 weeks now. I know for sure one is a boy and one is a girl. She didn't start out this big. I work for the store that I got them from and it is very clear that she is getting bigger while he is not. I feed them 2 crickets every 3-4 days, or more if they don't eat. She likes to lay on top him and they get along very well! She has not come out for me to take any pics tonight, but these are from a week ago or so. Her plates (is that what they are called?) are spreading apart more and she looks more pear shaped from the side. #1 is the girl and #2 is the boy. The last is her laying on him.    Any advice is appreciated!