Elia Martell had been in her chambers for quite a while after Rhaegar had taken a new wife, Lyanna Stark, especially since all the staff had been catering to the new wife, leaving Elia all alone taking care of her kids. This had made Dorne incredibly mad, they saw it as a disrespect towards their house and country.

Though despite Dorne simmering anger in the south, they had not done anything, not yet at least, while Elia longed to go home and be free of this castle now prison, she knew that the dynasties were always at odds with each other, and she did not want to start a war, so for several miserable months she waited it out. It was a surprise she wasn't driven mad, to be staying in four stone walls, at one of the highest of heights in the castle, being helpless with no way to escape could drive anyone insane, but not her. She was a Martell after all, they don't break easily, but that doesn't mean they, let alone a princess can stay cooped up forever with little to no contact, so she prayed to the god(s) she worships, and her prayers were answered.

Another Lady from another house, you, had been interested in knowing the foreign princess, and so you decided to offer to be her lady in waiting, or rather her most loyal one since the others were fawning over Lyanna, so then it was decided by the prince that you would be another lady in waiting. She did not know about this, but she seemed to be pleased to at least have some sort of friend or companion. You would visit everyday.