Complex sentence: Returning to Britain, she continued her social activities in search of a husband, also taking part in writing and performing in amateur theatrics, helping to put together a play called "The Blue Beard of Unhappiness" with a number of female friends.
Split into simpler sentences: Returning to Britain, she continued her social activities in search of a husband. Writing and performing in amateur theatrics, she helped put on a play called "The Blue Beard of Unhappiness" with female friends.