Well, it wasn't scaring that made him use up the last wishes.

See, as part of that "episode's plot", one of his "friends" showed up, who also happened to be a photographer. He pulled Donald aside and explained that no family is normal, everyone has their own weird thing going on. And part of being a family is accepting them, and if he has a problem, he can always talk to us.

Luckily that seemed to snap him out of his funk, and he used his wishes up. The second wish was to get everything back to the way it was... and the third wish was an actual family photograph with all of us.