Complex sentence: Hope apologizes and tells Liam to go back to Steffy and stay with her while she is at the hospital, but Liam soon discovers that Hope has left Aspen to go back to Los Angeles.
Split into simpler sentences: Hope apologizes and tells Liam to go back to Steffy and stay with her while she is at the hospital. When He gets back, He sees that Hope has left to go back to Los Angeles.