Complex sentence: It is revealed that the plant, known as Black Mercy, was sent to Kara by Non, who informed Astra that she'll be fine but Astra isn't happy about what her husband did as she made a deal to leave Kara alone.
Split into simpler sentences: It is revealed that the plant, known as Black Mercy, was sent to Kara by Non, who informed Astra that she'll be fine. However, Astra isn't happy, as she made a deal to leave Kara alone.