Catriona's Links
Artair was Cat's husband, who she loved very much.
Catriona was Artair's wife when he was alive, who he loved very much.
Avie is Catriona's only daughter, who she loves, but is distant from.
Catriona is Avie's mother. Though they love each other and generally have a good relationship, they appear to be distant on some level.
Blair is Catriona's niece. Cat has not seen her since she was a child.
Catriona is Blair's aunt, but she has not seen her since she was a child.