Female cat waits for male cat to finish eating?

I have two ragdolls, Bluey (male) and Bingo (female) They’re about 7 months old, from the same litter, both fixed. Recently I’ve noticed that after I’ve placed their food down, Bingo will suddenly be uninterested and go away to do something else while Bluey is chowing down. It’s only after Bluey is finished that Bingo will start eating. I guess this isn’t really a problem, I’m more interested to know why she’s doing this. Sometimes Bluey will be greedy and finish his own bowl before trying to eat from the other bowl, so I need to watch to make sure he doesn’t eat all of it