Civil Court is still a possibility after an aquital in a crimnal case. Keep in mind that you lost once, and could lose again under your set of facts, but the issues are somewhat different, and the burder of proof is different in a civil case. I have handled a number of dog bite cases, and you must be creative in demonstrating the prior viscious propensities of the dog, as known by the owner, as well as the owners negligence in controling the dog, and keeping him away from others. I would be glad to speak with you about this matter. It sounds like youmhave already invested alot of time in the matter, and will likely have to do so again.
I'm confused by your question - was the first trial a criminal trial?
If it was a criminal trial then yes, you could file a civil suit, but my question is: if you can't afford to pay your wife's medical bills how will you pay for a civil suit? What if you lose? What if you lose and the court awards the other side attorneys' fees and costs (meaning you would have to pay their attorney fees and costs for the civil litigation)?