For people with room temperature IQs who get caught up with sentimental bull and think it has substance, yeah, it's a legitimate response.
I hate to break it to her parents, but remembering the fact Allison's favorite color was pink and that she liked eating frosted flakes for breakfast is absolutely meaningless. A month from now, all these people pretending to care will forget all the random Allison trivia being shoved down their throat by CNN.