I found at least 1 error in the presentation last round but it wasn't relevant. The Ranger has a +6 to hit attack not +4 with bow.
This battle will have a high level of loot potential so it is a high level battle. Given the rothés are out of the battle, any loot on the cart is lost unless you track it down later and the rothés will not be hostile if their masters are not within range though you will not be capable of driving them without a bond or spell like Animal Friendship.
I will also warn you that what you are doing, though justified by you and in general, is likely not seen as justified by the trade guild or their allies which may include nobility so you will likely need to cover your actions in some way.
Added fun: because the children aren't leaving, they are all considered witnesses though they would not likely snitch on you, they could be coerced. Unless of course they are in some way distracted or unable to see the battle and their "rescue" must be told to them carefully.
It may be possible to keep them ignorant of the events if they had a distraction.
[Ashley] Welp, looks like Mr. Bigglesworth will be doing some babysitting instead of fighting. We need to come up with a good story as to why and how they were saved. The enemies just "ran off" and all that screaming you heard wasn't their gory death. Also, we will need to hide the bodies I guess. My panther self can drag them off, but I want that loot on them so strip and then drag them off.