[3] At twelve months old, Liddell was diagnosed with Spinal Muscular Atrophy a rare neuromuscular wasting disease.
Karni was misdiagnosed for 40 years and has recently been diagnosed with Congenital Titinopathy which is also a neuromuscular wasting disease.
Liddell, alongside Branka Pupovac, Hamish MacDonald and Charmaine Dalli, was one of eighteen Australian Paralympians photographed by Emma Hack for a nude calendar.
[5] Liddell's photography depicts her wearing sunglasses and a covered in body paint made to look like a polka-dotted bikini.
[5] In 2008, she was one of several Queenslanders to have their images painted by Ludmila Clark to have the picture go on display at the Customs House in Rockhampton.