Pompey's wife Cornelia was not with him at - nor on the run with him after - the Battle of Pharsalus. He rendezvoused with his wife Cornelia and his son Sextus Pompeius on the island of Mytilene, and from there went to Egypt, where he was assassinated as soon as he stepped ashore.
Pompey, Cicero, Cato, and Brutus are shown meeting in Pompey's camp after the battle, but according to history this did not happen. In fact, Caesar captured the camp and found that it had been decorated for a party to celebrate Pompey's victory.
When Pompey is explaining the battle of Pharsalus to Lucius Vorenus he says that his cavalry was repulsed by a single cohort of Caesar's reserve infantry. According to history, Caesar's reserves in that battle totaled nine cohorts.