This topic might have a better name.
Surely Quill's partner or Andrea Quill's partner is perfectly fine. "Miss Quill" or "Quill" is by far her most common name in Class.
Talk about it here.
Andra'ath's partner was killed during the Quill war against the Rhodians. Andra'ath blamed the Rhodians for his death. When she was later known as Miss Quill on Earth, this still drove her hatred towards them. (TV: The Metaphysical Engine, or What Quill Did)