Lol, I didn’t imagine the situation quite as dramatically as you did, with quotes and everything, but I thought the same thing. A sister from out of town who needs help caring for a sick newborn (Aurora is a nurse), and Aurora leaves because she thinks Celia is still in love with Petra or something and she needs distance. That wouldn’t be such a terrible way to write her out. Would they do a love triangle with VD, if it’s a woman?
It’s just weird that she doesn’t even have a last name, but now she suddenly has a sister and her family lives away (though not her brother and niece).