By Laura Smith-Spark BBC News Online

James Miller had won numerous awards for his work

James Miller was killed in Rafah while making a documentary about the impact of conflict on Palestinian children.

Since then his wife, 33, has carried on the fight for justice at the same time as caring for their young children.

Last week she met senior figures in the Israeli government to argue for a full, open inquiry into his death.

Important progress

Mr Miller's widow and family believe he was deliberately targeted by a soldier with the Israeli Defence Force (IDF).

The Israeli military police have concluded their investigation into the shooting on 2 May last year but the results have not yet been released.

We are very frustrated with a very long process Sophy Miller

Mrs Miller, from Braunton in Devon, talked to Ranaan Gissin, adviser to Israeli Prime Minister Ariel Sharon, and representatives of the foreign affairs ministry, the IDF and the Judge Advocate General during her Middle East trip.

While important progress was made, Mrs Miller said it was hard to believe no-one had yet been found responsible for the killing.

"We are very frustrated with a very long process," she told BBC News Online. "A year is a very long time to wait.

"It does feel as if we have to push all the time to get the answers from Israel, where we've always asked for a thorough, full and transparent process.

"The position is that the military police investigation is concluded but is now with the Judge Advocate General, who will look at the evidence and see if there is a legal ground for action."

Anniversary screening

Mrs Miller was told the Judge Advocate General might complete his review in four to eight weeks - but fears if no-one is indicted then the report may never be released to Mr Miller's family.

The widow was to spend the anniversary of her husband's death in Toronto, Canada, where his film was screened at a festival on Saturday night.

Death in Gaza was produced using footage filmed by Mr Miller and reporter Saira Shah before he was killed near the home of one of three Palestinian children whose story they followed.

The film shows the moment where Mr Miller was shot as he and his colleagues tried to leave the area they were in by asking the permission of the Israeli Defence Force (IDF).

Obviously on a personal level it's hugely difficult to watch a film where it counts down to the end of his life Sophy Miller

The killing - which the IDF initially claimed was caused by crossfire - was caught on camera by an Associated Press film crew.

As Mr Miller approached an armoured personnel carrier - carrying a white flag which he shone a torch on, calling out that he was a British journalist and wearing a white helmet marked TV - two shots were fired, the second killing him.

The bullet hit Mr Miller in the neck, the only unprotected part of his body.

Mrs Miller said: "Obviously on a personal level it's hugely difficult to watch a film where it counts down to the end of his life.

"You don't want to see it and you don't want it to end.

The film follows Palestinian children Ahmed and Mohammed

"But also, it's a film I feel incredibly proud to be there for - it was his film and it has enormous power and beauty and compassion and integrity.

"These are all things which were at the very essence of him and his film-making.

"It's also about a subject which is obviously enormously important and relevant today - so supporting the film is actually a positive, although it's very hard for me to do as a wife.

"Obviously it's something he should be having the acclaim for in person."

Mrs Miller hopes the film, which has won acclaim at film festivals in Berlin, Amsterdam, Chicago and London screenings, will raise the profile of her husband's case.

Son's questions

She also wants to find answers to give his children, Lottie, now one-and-a-half and Alexander, almost four.

"I told him that morning that his daddy couldn't come back and that he had been shot," Mrs Miller said.

"Since that day obviously I've tried with all the help of James' family and my friends to look after them and bring them up in the way he would have wanted.

"He (Alex) asked a lot of questions and I've always tried to answer them honestly and simply but it's something that will change all of our lives and will do every day."

She still has hope the Israeli investigation will bring a result.

"James' family and myself won't rest until his killers are brought to justice and we will pursue it relentlessly.

"But at the moment the process in Israel is being undertaken and we have put our faith in that process and hope it does end in a result."