Right of first refusal

We have the right of first refusal on the 3 cemetery plots next to Nate's. Haven't thought about them, but they are going to put them back "on the market" next year if we haven't purchased them by the end of the year. How do I handle buying plots for Christy, me _and_ Ani? Just not something I want to think about, but I have to. We're going to buy them, of course.