Really, you moved out over that? How long have you lived in Thailand? Haven't you yet realized it's a fairly communcal society here, hence most people are quite nosey and love to gossip?
You do realize you most likely could have resolved that situation by simply giving her some 3-in-1 coffees or a couple bagels, or similar, right? When you're confronted with a situation like that again, approach them and offer some type of food item. Nothing special, and even just some bananas will do. Small things like that go a long way in this society, much more so than out West.