If you haven't already, you should immediately report this incident to the insurance company who insured the vehicle your husband was driving at the time of this incident. They should be assigning you council to assist in your defense of the civil claim. Best of Luck.
You should turn the summon and complaint over to the insurance policy that was in full force and effect at the time accident. Your insurance carrier should provide you with a defense in the lawsuit. You should cooperate with the your insurance company and that attorneys that are hired to defend you in the case.
I wouldn't worry about it at this point as long as your insurance company knows about it and is processing thew claim.
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Contact your insurance carrier and provide them with the summons and complaint. This is why you pay for liability insurance. The insurance carrier is obligated to defend your husband and indemnify you on a settlement or judgment. As for the house, if you were an owner of the car it does not matter if you owned the home prior to being married to him. However, your home and bank accounts won't come into play until a long time from now and there may not be any issue with it at all if the case is settled within the limits of your insurance policy.
You should make sure the insurance company is taking care of this, if there was insurance coverage. Your responsibility would appear to be zero. However, if you are named as a defendant in the lawsuit, you must defend it or you could have a problem if the person gets a judgment. It would put your assets at risk. If you are a defendant, in addition to having the insurance company take care of this, you should call a lawyer who offers free consultations. If you are a named defendant and there was no insurance at the time of the accident (that is the company that should defend the case), contact a lawyer IOMMEDIATELY