Complex sentence: Cornelia loves ice skating (in the tv series Lillian states she has won many medals showing she is very good at ice skating) and hanging with her friends she hates the fact that her parents spend more time with Lilian than with her.
Split into simpler sentences: Cornelia loves ice skating (in the tv series Lillian states she has won many medals showing she is very good at ice skating) and hanging with her friends. She hates the fact that her parents spend more time with Lilian than with her.