How did reinforcements get there so fast
Even if you tell me that the duo is supposedly really close to the manor, it would still take a good amount of time for the horse to get back, the soldiers to notice, the incident to be reported, the reinforcements to form up, and then the reinforcements to arrive. In that amount of time, there were only 2 pages of conversation (manga didn't show Sasha getting off the horse), and a fight that looked like it barely lasted for 2 minutes.