You received nothing in writing guaranteeing you work so therefore you have counted your chickens before they have hatched.
Even if this person "doesn't really like to be questioned", I would be woman enough to keep it light and ask, "By the way what ever happened to that opportunity you mentioned to me x time ago?"
I often have a hard time of letting things like this go but have learned and am still learned the art of letting it go. It doesn't really matter why the plans may have changed or that they haven't spoken with you. As long as you keep looking behind you at what happened you can't transition to looking in front of you for what is going to happen or be open to new opportunities or create new opportunities for yourself.
For the sake of your own "ME, Inc." please ask and keep it light and then move on. No other person should be able to have so much weight in your future plans for you and your family's well being. I hope this helps.