So who is Ashley you ask? Evan's imaginary pet dinosaur of course! She's just a baby and very small but she's having a lot of seizures.
I'm not sure if the right response is to laugh or cry as Evan declares that Ashley is having a seizure, but it really is cute and you can't help but snicker a little. He turns all his attention to her or holds her while she has a seizure. He also talks to her while she has the seizure and lets us know when it's over so we can tell him how long it lasted. Poor little Ashley has cluster seizers and can easily have 10 of them in a row, but they are quick...10-40 seconds.
Evan's seizures are not traumatic experiences for him so I tend to think this type of imaginary play is really just a reflection of what is normal to Evan.