Can creditors come after my business in any way?

My wife runs my business which is a little diner. We barely are making a profit. Anywhere from $100-$200 per day. She opened up several credit cards in her name with the businesses name on the card as well. She has defaulted on the payments and they are in a collection agency. I am not an authorized user or a co-signer on these cards. Can these creditors sue me, my business or is she strictly responsible for these debts?