Complex sentence: She arrives at the Pavilion in the aftermath of Grendel's attack, which has left Lamia dead, and helps the Doctor flee; but the situation is soon reversed as Grendel succeeds in destroying the Reynart android and then recapturing the errant Romana.
Split into simpler sentences: She arrives at the Pavilion in the aftermath of Grendel's attack, which has left Lamia dead, and helps the Doctor flee. The situation is soon reversed as Grendel succeeds in destroying the Reynart android and then recapturing the errant Romana.