I'm and aspie; and, I'm beginning to think my wife might be on the spectrum too.
Most of the time she's a very pleasant person, reasonable, logical: but, when she can't reach her son, her mother or myself on the phone when she expects them to be available she becomes absolutely terrified, almost hysterical and cries uncontrollably . All she can think of is different horrible reasons the person isn't answering their phone (they have been shot or hit by a car or kidnapped?)
She becomes absolutely inconsolable. Every time this has happened in the past no one has been hurt and there has always been a reasonable explanation for why they didn't answer the phone; but, reminding her that everything has always turned out ok has almost no effect. Pointing out that there are not many bad (accident, etc.)reasons for a person to not return a call; but, there are lots of good reasons or that the chances that something bad has happened is much less likely then something neutral or good thing has no effect either.
As soon as she hears from the "missing" person she calms down and everything is all right. When she's not in panic mode she agrees that the fear is unreasonable and even apologizes for her behavior.
Does this sound like a meltdown or a panic attack or something else?