When Sulie escapes from Daniel he intercepts her and fires his rifle. Her hands are suppose to be tied however when she falls off the horse her hands are free you see her arms stretched out. Sulie comes out of the water her hands are tied again.
Sullie mentions maybe going to Texas, Texas was not known even by 1820. The term for the northern Mexican state of Tejas was not used until 1821, this later compromising most of Texas.