Final answer:
In chapter 7 bankruptcy, all assets must be disclosed, and trustees can undo preferential transfers. The stock in Karen's company is likely part of her bankruptcy estate unless exempted by specific laws, and it's possible that the trustee may sell the stock to satisfy her debts.
Step-by-step explanation:
When filing for Chapter 7 bankruptcy, all assets and debts must be disclosed to the bankruptcy trustee. This includes transfers of property made prior to filing for bankruptcy. Under Chapter 7, a trustee can unwind preferential transfers made to insiders (like family members) within one year before the bankruptcy filing if it appears that the transfer was made to hide assets from the bankruptcy estate or to favor one creditor over another.
In Karen's case, the transfer of the diamond necklace to her mother might be considered a preferential transfer, especially since it was not disclosed. As for the stock in her talent agency, whether Karen can keep it depends on the equity she has in the business and the exemptions that she is allowed under California law. California has two systems of exemptions that debtors can choose from when filing for bankruptcy. However, in general, business interests are not exempted to the same degree as, say, personal items or tools of one's trade might be.
If Karen's talent agency has value as an ongoing business and there are no exemptions that apply to allow her to protect the full value of her stock, the bankruptcy trustee may have the right to sell her stock to pay her creditors. As Karen is the sole shareholder and there are no employees, the entirety of the stock's value would be considered part of her bankruptcy estate.