As Alexander ended his speech to Miss Linda with the words, '....your people cannot wait too long' the lady understood this was a not so subtle threat.
It alluded to the fact Alexander was not willing to feed and care for all those captured men indefinitely.
The original plan for Alexander was to take the majority of them as war slaves back to Zanzan, sparing only Lord Bernard and a small entourage for their voluntary divulging of information regarding Lord Parker.
Without Lord Bernard's very eager recount, Alexander might not have been able to reach the hill before sunset, and from then on, who knew how the story would have unfolded?
But even without Alexander's 'strong urging', Miss Linda knew she would have to move quickly.
Because she needed those people's support to stabilize her own rapidly plummeting position.