Complex sentence: In reality, she actually was in a self-induced cleansing coma, a form of "deeper sleep" she learnt at the age of fourteen from Gola Schweem, which is young even by human standards, much less fairy.
Split into simpler sentences: In reality, she actually was in a self-induced cleansing coma, a form of "deeper sleep" she learnt at the age of fourteen from Gola Schweem. She learnt it at an age young even by human standards, much less fairy.