
Hm. You might have screwed yourself when you deleted the alt. For some reason XIV has a hard time letting go of characters. For example, in the 1.0 the name "Sei Ikari" was acceptable. Eventually, her player wanted to redesign her look (and Fantasia wasn't an option) so she deleted Sei and rerolled her.
Suddenly, the name "Sei Ikari" wasn't acceptable any longer. She had to change it to something else for the duration of 1.0. When we were given the option to transfer for 2.0, we did, and the name "Sei Ikari" was still unaccepted. There's no one on Balmung with that name, but no one's allowed to use it. For some reason. Then, for some reason, she wasn't allowed to change to Sei Castille either post-bonding.
tl;dr: Server might not have noticed you deleted her, lodestone might be caching that data.
Suddenly, the name "Sei Ikari" wasn't acceptable any longer. She had to change it to something else for the duration of 1.0. When we were given the option to transfer for 2.0, we did, and the name "Sei Ikari" was still unaccepted. There's no one on Balmung with that name, but no one's allowed to use it. For some reason. Then, for some reason, she wasn't allowed to change to Sei Castille either post-bonding.
tl;dr: Server might not have noticed you deleted her, lodestone might be caching that data.