Complex sentence: With slavery finally abolished in Slaver's Bay, Daenerys decides to return to Westeros and reclaim the Iron Throne; however, she insists that Daario and the Second Sons remain to keep the peace.
Split into simpler sentences: With slavery finally abolished in Slaver's Bay, Daenerys decides to return to Westeros and reclaim the Iron Throne. However, she insists that Daario and the Second Sons remain to keep the peace.