Evidence showed McCarthy phoned Booth to borrow a cup of sugar, then attacked Booth when she went to retrieve it. Booth was stabbed with a butcher knife, beaten with a large candle holder and robbed of a diamond wedding ring.
“(McCarthy) quite literally took the woman, put her left hand on a chopping block of the kitchen and then used a knife to sever her ring finger while she was still alive,” said Greg Davis, the former Dallas County assistant district attorney who prosecuted McCarthy. “She took the ring from the finger that had been severed and continued the attack until she finally killed her.”
Prosecutors showed McCarthy stole Booth’s Mercedes and drove to Dallas, pawned the ring for $200 and then went to a crack house to buy some cocaine. Evidence also showed she used Booth’s credit cards at a liquor store and was carrying Booth’s driver’s license.