Xènia is a midwife in practice before she has much of any business being one in theory. In civilized places one apprentices into it, but there are no midwives in her village, not anymore, only mothers and sisters who have done it before. You do it enough, you learn how it works, you become half a midwife where there once was none - or, at least, that's how Xènia did it. When she manifests healing powers while holding her mother's wooden spiral pendant, she's pretty well cemented as the person you want by your side when it happens. Not that anyone talks about that, outside of hushed whispers.
In her youth, Xènia was also a bit of a ghost hunter. But only a bit. She had one formative experience with a really angry ghost that almost killed her, after which Xènia decided that an ounce of prevention really was worth a pound of cure. So now she's more than a bit of a grave digger. People leave infants - and sometimes other bodies - out in the elements, without giving them one bit of direction. She understands some of the desperation that leads them to do it, but that doesn't make it any more responsible of them to let the elements kill a child, and then not even come back to clean up after themselves. So Xènia does it, whenever she finds one or someone points her to one - digs a grave, blesses it, says the proper prayers as she was taught to say them, and makes sure that no one sticks around who shouldn't. Xènia's opinion is that people ought to clean up their own messes, but if they won't, you can hardly leave the mess about forever. She only occasionally has to kill the remains all over again.
She does still hunt ghosts, occasionally. These days, she knows that the right way to go about doing it is a bit of detective work, so Xènia is a bit of a detective. There's usually no need to make it a fight, if you're careful. Some ghosts are angry about something a bit pettier - or, occasionally, less petty - than being left out in the wind and rain to be eaten by dogs, but usually it's something that can still be fixed, if you look at it from the right angle.
When she hears about the convention in Westcrown - well, it's a bit of a trek. She doesn't especially want to go. But the government has certainly left its share of ghosts and bodies and messes in general left and right, and if someone is trying to clean them up, and asking her help to do it - well, that's much less frustrating than leaving messes about and then ignoring them. Her husband will miss her, but their children are nearly grown, now, and he can get by with the daughters for a season. She can instruct the next generation in the art of cleaning up after themselves.