Zwicker reiterates what many estates attorneys have been saying since Prince died: He should have drawn up a will.
"If he had a well-written estate plan, it could have eliminated all the expense and nonsense going on now," she says. "His estate plan could have included an intentional omission clause: 'These are the people I provide for and I intentionally deprive anyone else who claims to be an heir.' "
Zwicker says the failure to draw up an estate plan happens among some of her clients, especially in sports or the entertainment industry.
"My rich clients who are entrepreneurs, real-estate developers, hedge-fund creators, they're all business people and they understand the need to plan," she says. "Where I have fears about this happening is our clients who are professional athletes and in the entertainment industry. Their skill set is often completely different than planning ahead.
"There are times where we cannot bring a client to the finish line — they can't get over some hurdle" to sign the papers.
Meanwhile, because there is no will, more than half the value of Prince's estate could end up with the IRS (40% of estates over $5.4 million) and the state of Minnesota (16% of estates over $1.6 million). The deadline for sorting out the tax bills is in January, and Uncle Sam takes only cash.