Complex sentence: A worried Vera goes to her lover Grisham for help but realises she can't confide in him then rides to the Alvarado hacienda to see Tessa and tries to confide in Tessa about the events of the previous evening.
Split into simpler sentences: A worried Vera goes to her lover Grisham for help, but realises she can't confide in him, and then rides to the Alvarado hacienda to see Tessa. Vera tries to confide in Tessa about the events of the previous evening.