i too find it amazing how quickly that can happen for me. but a difference with you is that you found out what you needed to know (that she was alive and well for now). It's way more stressful to be in limbo, and taking care of our mental health can mean chasing down a situation to where we get the answers to the things that are worrying us...
So good for you for chasing this down to settle your own mind and then, once you had the answers you needed, getting very quickly out of it....