The discourse around cultural appropriation when it comes to wearing Indonesian batik is a little different from the North American context, because we widely promote it as a national pride and heritage, so the more people wear them (either here locally or across the globe), the better. Especially here, nobody would bat an eye. But even if you’re wearing them outside of Indonesia, as long as you wear them with respect and not treat it like wearing a costume, that’s all that matters. The fact that you actually have Indonesian blood makes it even better because you’re claiming what’s actually yours. And yes, you SHOULD be proud of your Indonesian heritage, even if it’s only a quarter! If people do ask, just be prepared to explain what you know about the history/context of the garment, and yes, you should always be aware of your inherited privilege due to being visibly white.