【In this time line, collei disappeared within a year of becoming a ranger, became she has been found by Dottore.Dottore let her know that she can't protect anything, any she loved, this time, she accepted the truth that she was puny, and she chose to follow Dottore away.

Three years later, collei returned to Sumeru under an assumed name as a unit leader of fatui.】

Collei:“Oh, is this my missing person's notice?I miss my days as a ranger.”