Complex sentence: Weighed down by events since her mother's death, Chrissie took a leave of absence and returned in episode' Deep Dark Truthful Mirror', her future at the hospital and her relationship with Sam, remains to be seen.
Split into simpler sentences: Weighed down by events since her mother's death, Chrissie took a leave of absence from the hospital. Although Chrissie returned in episode' Deep Dark Truthful Mirror', her future at the hospital as well as the future of her relationship with Sam, remains to be seen.