By Yelena Mandenberg A murderer who was labelled the “worst offender” for killing her disabled friend in a £7million death-for-hire plot has been jailed for 99 years. Denali Dakota Skye Brehmer, 23, from Alaska, US, recruited a gang to help murder Cynthia Hoffman, who had developmental disabilities. Brehmer is one of six people implicated in the death of Hoffman. This group was aged between 16 and 19, and believed they’d get $9million (£7,095,285) for her murder. On June 2, 2019, Brehmer and a friend, Kayden McIntosh, took Leyland’s car and drove Huffman to Thunderbird Falls – a 200ft waterfal…