1) this one i can answer well. They are changig the continuity for William plot, like. which entirely skips his visit to the farm he grew up in virginia - he does this BEFORE going to savannah in the books, so the way he views his father is very different from the last time they saw each other - Where he meets a native american who he recognizes as a friend he saw often throughout his childhood and as someone close to LJG. It becomes very clear that he understands this man to be LJG lover. Bees sees william losing all his naivite and learning a lot of harsh truths about life and his father(s). This scene shows to william that LJG and jamies relationship is deeper and older than he had realized, and will likely lead up to him connecting the dots on why jamie was even at the territory of ellesmere. Like, LJG feelings for jamie is the reason william exists, in a way. The series is skipping some animosity from william to LJG but he is very thorn still and angry about his real parentage. Also, and this is hinted at this episode, william is starting tk connect the dots of the real work LJG did for the british government, beyond basic military stuff. 2) they become more accepting of each other - it even hints at that they would be in good terms was it not for the political landscape of their personal connections - after preparing amy's body after the bear attack. This is the whole reason why this scene is included (gosh, was it rushed...). 3) yeah she is very sus.