Would she be flippant about it, though? She must be aware of how much she's loved and how much people around her suffer when she dies.
Let's compare it with the Krakoa era resurrections. While the numbers of deaths in this era have certainly increased, except for the stupid kids in Way of X, most characters are written as trying to avoid death, despite the fact the resurrection protocols is much more of a given (or, at least, faster) than resurrection through the Phoenix (which can take up 150 years... which means many of those loved ones would be even dead by the time she comes back).
Not challenging you. Just thinking together, okay? How would you write it to make it feel like something she'd really do?