You can be the weird one, the one that does thing different, the one that causes chaos and confusion. You can do that for a while and then after a few years, when things go back, they welcome you with arms and close their eyes to any other bad because you are their sister and nothing changes that.
You will make time for what you love. This is a common saying but my sisters exemplify this. My sisters all own very successful businesses, had several children and educated them at the same time. Some of them pay a babysitter to come over so they can have an afternoon away to focus on their business. Other times they just have to juggle everything at once and maintain their sanity. They are working machines. They never have free time but always find time to accomplish massive goals and maintain their own identity.