"The spirit of the order will be maintained. It is the spirit that keeps the laws and codes of the Beyond alive."
| Spoiler warning!|
This article contains plot details from one or more of the books.
Colleen was at the gaddergnaw in the march with the other wolves of the Watch.
Colleen is briefly mentioned to be by Finbar's side when Faolan and Edme first go to the Watch. She is also mentioned to become, quoted, "extremely cranky if she has to work even a second over her shift" by Winks.
Edme and Faolan get back from scouting in Shadow Forest. Before they can rest, Banja comes and tells them to get on shift, as to many of the cairns were left "untopped". Colleen is passing by, and tells her that the two must rest, as they were on scout for a while. She and Banja begin to argue over them and the laws and orders of the Beyond.
In Spirit Wolf, Colleen dies from the earthquake, her skull was crushed in by a boulder. However, because the ember was destroyed, she was mended, giving her ears along with the other watch wolves.
Colleen: "Banja, don't be ridiculous. For Lupus' sakes, these two have been on scout for four days. They need to rest, but even before they rest, the Fengo would like to see them in the gadderheal."
Banja: "What? They are being called to the gadderheal? But the raghnaid is about to meet. I was on my way there."
Colleen: "As I am myself."
Banja: "But young wolves never attend raghnaid meetings. It's an offense."
Colleen: "An offense to what?"
Banja: "An offense to ... to ... to the order."
-- Banja and Collen; Frost Wolf; page 19
- "Colleen" is a variant on the Irish word "cailín" (pronounced "caill-een") meaning "girl".