I guess in reality, I would most likely react similarly to you. My mind would race, my imagination would run wild... And Id end up causing myself piles and piles of stress and pain. I say this because I have more self-inflicted wounds than any others!
Diving head first into the insanity would do me know good.
What would my ideal, good Al-anon recovery response be? To not read into it. To not snoop and detective around trying to unearth the story. To trust that more will be revealed... On your HPs schedule. I'm certainly not saying ignore it. I'm saying - see it, acknowledge, but don't get swept up in it.
Take a deep breath and get focused back on you. What do you want for your life?