My 20 month old daughter says “ew no” to almost any meal put in front of her. I rarely introduce a food she likes or will eat (other than snacks such as cheese, fruit, etc.). When our son finishes his meal, he gets a healthy snack. When my daughter see this, she has a meltdown. I tell her she can’t have a snack until she has some dinner. I’m worried she is too young to understand WHY brother gets the snack. Is she too young to understand why he gets one and she doesn’t?