Sisters Lorraine Smith and Audra-Ann Bean were today convicted of stealing almost half a million dollars from their 87-year-old grandmother Lenice Tucker.A unanimous Supreme Court jury found Smith, 46, of Lusher Hill, Warwick, guilty of one count of senior abuse by financial exploitation and one $8,000 theft charge. She was also convicted by majority verdicts of six theft charges totalling $477,580.Bean, 44, of Lusher Lane East, Warwick, was convicted unanimously of the senior abuse charge and convicted by majority verdicts of three counts of theft totalling $463,885.The sisters are the first defendants to be convicted under the Senior Abuse Register Act 2008 and their names will be the first to be placed on the Senior Abuse Register.The jury of ten women and two men were sent out to consider their verdicts by Puisne Judge Carlisle Greaves at 10.40am and took more than seven hours to reach their decisions.They cleared Smith unaminously of one count of stealing $1,000.The pair were remanded in custody pending sentence on a later date.