Carmen Thomas' tearful mother yesterday told of how she and her daughter were trying to "bond again" after years of separation but her brutal murder ended all hopes of repairing their relationship.
Teresa Scott, who lives in South Africa, said guilt over the failure to re-establish contact "eats at me every day". After her daughter's death, she could not sleep and found difficulty doing things she once enjoyed. Mrs Scott was prescribed anti-depressants and sleeping pills.
At Callaghan's sentencing hearing, she told of her concerns about the effect his mother's death and his father's jailing had on her grandson.
"Jack had to suffer the loss of his mother and has been told his father did this. When we chat on the phone, he sometimes sounds very down and upset."
Her husband, Wayne Scott, said he could never forgive Callaghan for what he did to Ms Thomas' body.