During lunch time on January 18 2003, Sandra and Elizabeth began giving their mother liquor in order to get her drunk. Their plan was to make Linda fully inebriated so that she could not resist their attack. Linda was also given pain killers by her daughters, to slow down her heartbeat. Sandra and Elizabeth then waited for the drugs to work. While waiting, the sisters communicated with their friends online, one of whom ended their conversation with the phrase "well good luck - wear gloves".