Complex sentence: De Acosta wrote two plays for Le Gallienne during that time, "Sandro Botticelli" and "Jehanne de Arc"; after the financial failures of both plays, the two mutually ended their relationship.
Split into simpler sentences: De Acosta wrote two plays for Le Gallienne during that time, "Sandro Botticelli" and "Jehanne de Arc". After the financial failures of both plays, the two mutually ended their relationship.