My wife used to be a speedster, my daughter was a speedster, my brother-in-law is a speedster, my former mentor was a speedster, my dad's doppelganger from another is one. Uh, there's a lot of us? I think generally speaking, there's at least one speedster Earth active at any given time on any Earth, but I could also be wrong about that.
It's never easy to hear or to say, but I'm sorry for you loss.