How to deal with a difficult sister who thinks the world revolves around her

[NuclearEnergy]

She has her own house, thank god! However, may I point out my parents bought that house and she is simply paying them for it? They are being her bank

What your sister does impacts you and us how?

Fair enough. But this is when she is around us. In fact, we are going to the Caribbean later this week. So wish me luck with that endevour.