A former school friend of murdered soldier Narel Sharpe has been jailed for nine months for helping to cover up his killing.
Narel Sharpe served in Kosovo and Iraq
Chervaun Whitehouse, 22, from Smethwick, was jailed and a 16-year-old sentenced to eight months detention for perverting the course of justice.
But the mother of the murdered soldier said Whitehouse knew her son well and condemned the sentence as too lenient.
Levi Walker, of Edgbaston, Birmingham, was jailed for 30 years for murder.
Trooper Sharpe, who served in Iraq, was shot in Smethwick in September 2004 as he made his way home on leave to celebrate his 21st birthday and his mother's 40th.
Whitehouse helped her 26-year-old lover to dispose of a gold chain he stole from the soldier during the murder and also gave police a false witness statement.
During the hearing at Birmingham Crown Court the 16-year-old, who cannot be named, was also sentenced for possession of a firearm after he had helped dispose of the gun.
Narel Sharpe's mother, Gail, said: "I thought it would have been longer, because I believe they both knew exactly what they were doing.
"I don't feel it is long enough; but at least I know that Levi Walker is in prison for 30 years.
"I despise them for what they did, I really do. Chervaun and Narel were at school together, they were in the same class.
"She knew Narel very well and knew what sort of person he was. I was so proud of my son and it's really sad that she had played that part in covering up his killing."
Mr Justice MacKay, told Whitehouse: "You were attracted to a cheap gunman who got out of his league and committed a wicked murder, and you chose to back him.
"The fact is you did your best to thwart the interests of justice on this occasion. Luckily others had the courage to stand and be counted."