The mother of school teacher Jane Longhurst today said she still hoped "tangible good" would result from her daughter's death on the third anniversary of her murder.

Liz Longhurst, 74, said she had managed to find "some kind of balance" in her life that stopped her becoming embittered and meant that her daughter's killer, Graham Coutts, had not triumphed.

Mrs Longhurst also wanted to say thank you to the thousands of people that signed her petition calling for a law criminalising extremely violent pornographic websites, which Coutts was addicted to and looked at before strangling Jane in 2003.

The pensioner has campaigned tirelessly since Coutts was convicted for a change in the law in an attempt to make some good come of Jane's tragic death, three years ago today.

Mrs Longhurst, who lives in Reading, said: "I think Jane would be very surprised but also proud, I hope, of the work I have done.

"It has been hard but whatever life throws at me I just have to take it.

"It doesn't get easier but you learn to live with it.

"I will never be able to forgive Graham Coutts but I have managed not to let that inability to forgive eat me up. If I let it eat me up then that would be like him winning, and I am not going to let him do that."

The Jane Longhurst Campaign, which Mrs Longhurst said had "acted as a kind of therapy", was launched on International Women's Day last year, backed by Brighton Pavilion MP David Lepper and later by Amnesty International.

The Longhurst family met Home Secretaries David Blunkett and Charles Clarke, who were both supportive of the campaign's aims, and a Government consultation document entitled "On the Possession of Extreme Pornographic Material" was published last August.

In a major victory for the campaign, Home Office minister Paul Goggins said he intended to ban possession of extreme pornographic material downloaded from the internet in the way child pornography is outlawed.

The new offence of possession of violent and abusive pornography would mean images acquired electronically would be illegal. During the consultation period Mrs Longhurst delivered her petition to Parliament with more than 50,000 signatures supporting the proposals.

The Home Office is due to publish the result of the consultation before the end of the month.

Mrs Longhurst said: "We haven't had any indications as to the result but the feeling I get is that the Home Office is very keen for it to go ahead.

"So three years on from the horror of Jane's death, it seems as though some tangible good may yet result."