The question would be what the legal framework is for the Pixies partnership. It could be that Charles is sole owner and the other members are employees, or they could all be partners; Kim could still be a partner or she could have been bought out or relinquished shares when she quit. In the event she was still a partner she would potentially get some chunk of touring revenue if they had agreed on that. I have no idea what the Pixies legal/corporate structure is!