You've been through a traumatic experience.
The drowning in a pool could have been just as traumatic as Edith's version, especially if Donnie felt some responsibility for his stepbrother's death.
It was very traumatic for Donnie and he hasn't spoken since.
It was a traumatic experience for both of them, and hadn't she felt ill the first time she went back?
Bringing a new pet into the home is often very traumatic for existing pets.