Previous to the Initiative, Foster Addison was the Chief Operations Officer for a provincial capital. She stated in her screening interviews that she preferred the position because it was the highest non-elected municipal office: it carried responsibility without requiring a public face.
Foster was asked to head Colonial Affairs early during Initiative training. She accepted after being assured that it was temporary. After arrival, outposts would appoint a Council, and she could be obscure on a new world. In the meantime, she would remain senior advisor to Jien Garson. Unfortunately Garson died in the Nexus' initial Scourge impact, to be replaced by Director Jarun Tann.
During the rebuilding, Colonial Director Addison had no colonial affairs to direct. That limited the influence she wielded, and increased the scrutiny demanded. She has expressed frustration at the open-ended nature of her position, and the ongoing need for statements about the status (or lack) of outposts. Though she remains eminently capable, it appears to be exactly the job she didn't want.