Norma and Janet decided to form a partnership for selling gourmet picnic baskets. To raise money they convinced their mothers to invest $5000.00 each as limited partners. Norma's mother was an experienced restaurateur and watched the business with great interest. On several occasions she advised them on the business and contacted old business associates to buy surplus stock. She even filled in taking orders in the office when needed. A customer who was made ill by contaminated food from a tin can in one basket sued. What is the main legal issue? What would be the liabilities of the mothers' if any?