Note: is currently sleeping with Gurge, a male half-ogre bounty hunter, when they are both in the Keep
Xy's family was solidly middle class. Her father was a mage of some small ability, and he had decided that his daughter Xylien was going to follow in his footsteps. He was a hard taskmaster who drove all four of his children hard, but none harder than Xylien.
However, harsh training, teenage emotions, improper pedagogy, and a fair bit of magical talent don't always mix well. A conflagration resulted in the death of Xy's entire family, and she fled to hide in the local library - a small wonder of the region. She stayed there for 5 long years.
It was not an easy time; she was in hiding and had only books to keep her company. A political change resulted in an administrator who noticed things were moving around and food was going missing. Xy didn't know anything was up until she was unceremoniously seized by some old guy with a pair of town guards, determined to be penniless, and tossed out.
One of the underlings cleaning up her stuff realized her spellbooks were not part of the library and very kindly ran them out to her. Realizing she was completely lost, they suggested Xy go to one of the temples. As luck (or plot) would have it, she ended up at a temple of Sumar-Fareen.
Poorly socialized teenage mages are not exactly Sumar-Fareen's usual wards, but they took her in, and she started to flower.