Jennifer Hudson's faith has helped her not to be "bitter" about the loss of her family, it has been claimed.
The singer's mother, brother and nephew were murdered in 2008 and her former brother-in-law William Balfour has been accused of the killings.
Hudson has rarely spoken about her grief and it has been suggested her religious views have helped her find some comfort.
"Her faith has kept her from becoming bitter and while she wants Balfour convicted - obviously - her faith is keeping her from becoming a hater," a source told Chicago Sun-Times.
"She knows that would destroy her and impact negatively the lives of both [fiancé] David [Otunga] and her beautiful baby boy, David Jr. That girl is all about faith and family. Pure and simple."
Balfour's trial got underway this week and Hudson was the surprise first witness called.
It's been reported the 30-year-old star knew how hard she would find speaking about what happened but felt she had to be involved.
"Family is everything to Jennifer She knew testifying would make her relive the whole nightmare, but that's nothing new. A day doesn't go by when she doesn't think about those three family members she lost. She knows she will continue to think of them and mourn them every day - for the rest of her life," the source added.
Balfour is accused of killing Hudson's mother Darnell Donaldson, brother Jason Hudson and seven-year-old nephew Julian King as he was angry the singer's sister Julia Hudson didn't want to be with him anymore. He has denied the charges.
In court earlier this week, the singer admitted she had never wanted her sister to wed Balfour.
"I told her over and over again to not marry him," she said. "We did not like how he treated her."
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