V3 P6, 4%
"If you mother tries to harm her, she'll get their comeuppance"
Their -> her
7%
"to say he had no affection for his own children would be untruet
untruet -> untrue
33%
"the coachman said, a surprisingly casually..."
Delete the 'a'
30% "Even if she was the retired matriarch of the household... it seemed odd she had no guards"
33% "The guard groaned in pain... then he turned on his heel and fled, abandoning my aunt"
Where'd this guard come from? None was introduced, as far as I can tell. At first I thought it might be talking about the coachman, but he sticks around (doesn't flee).