Since it's pretty unlikely that the game was paused when your computer crashed, and you had to restore it to a previous date, chances are what you are experiencing are the effects of "time traveling" (in your case, it's very much accidental, however, the results are the same). I'm enclosing information on it below.
Unpredictable results can occur if adjustments are made to the clock, especially moving the clock backwards in time. Different games will respond differently under those circumstances, ranging from minor statistics anomalies to killing whatever is living in the game. Virtual Families has a much more complex real-time engine than Fish Tycoon, and you're much more likely to see problems with it when adjusting the system clock.
While many people do adjust their system clocks to speed up play, doing so affects far more than just the games. Every application in your computer is affected, including the file system and Windows system applications. For all of those reasons, we do not recommend changing your computer's system clock to speed up game play.
There are a couple of ways to resolve the problem: You could wait it out and see if the game recovers, perhaps starting another game in a different slot while you're waiting. Or you could just delete the malfunctioning game and start over.