By Chiara Fiorillo The mum of an 11-year-old girl who has been missing since Thursday has made an emotional appeal for her safe return after authorities issued an amber alert. Audrii Cunningham was dropped off at her bus stop in Livingston, Texas, at around 7am but never made it on the bus or to school, authorities said. Her family reported her missing at around 5.30pm on Thursday when she did not get off the bus and so far, her mother Cassie Matthews said there are “no leads” in the search. The mum added: “We would like to have her come home, it’s not like her to just run off or disappear, sh…