Sister of Dom Gabriel Ardais, younger sister-in-law to Rohana Aillard-Ardais, aunt of Dom Kyril-Valentine Ardais and Elorie Ardais.
Alida was a leronis, trained at Neskaya Tower. She was trained as a healer and rated as a matrix technician. She possessed the Ardais Gift (catalyst telepathy). Alida unintentionally awakened Margali n'ha Ysabet's laran while healing Jaelle n'ha Melora's wound by matrix.
She was described as "...small, slight woman with flaming red hair...and a kind of indefinable arrogance..."
Alida did not get along well with her sister-in-law.