Complex sentence: After they struggle, Eloise is captured by Eglantine's accomplice and taken to Crassac's castle dock where she joins the nuns who are being sold and shipped to the Americas as slaves.
Split into simpler sentences: After they struggle, Eloise is captured by Eglantine's accomplice and taken away as their prisoner. She is taken to Crassac's port where she joins the nuns who are being sold and shipped to the Americas as slaves.