I remember from 2001- Oklahoma or Arkansas I think. Phillip Bond killed his wife Janice and two of their four children. I think the children's names were Megan and Nathan and they were in their teens. But I can't find any links.
It looks like her name is spelled "Janis" and you're right - they were from Oklahoma. Here are some links:
CrimeNews 2000 - crime news archive page
A man killed his wife and two children, then shot himself, officials said today, just days after the woman obtained a victim's protection order against him. Grady County sheriff's deputies went to the home of Phillip and Janis Bond at 8 a.m. this morning after a co-worker of Janis Bond reported that she'd failed to show up for work. (She apparently owned or ran a day care center that she usually opened at 5 a.m. When she wasn't there to open, the co-worker became concerned.)
ARDMOREITE.COM
... Inside a large, two-story home south of Chickasha, a father slit his son's throat and strangled his teen-age daughter. Phillip Bond, 43, murdered his wife of 23 years, then shot himself in the chest in the upstairs master bedroom early Thursday, said Kym Koch, spokeswoman for the Oklahoma State Bureau of Investigation...
Deputies went to the home Saturday morning after Janis Bond complained her husband kicked her with steel-toed boots and punched her in the face...
Janis Bond obtained a protective order against her husband, who posted bond Monday. The next day, escorted by a deputy, he went to the home to get some personal belongings, Koch said.
Phillip Bond walked to the house early Thursday after parking his sport utility vehicle about a mile away, apparently to make sure the family wouldn't hear him pull up...
The Bonds had two other children, ages 26 and 18, who did not live in the home.
Barrington said Janis Bond lived in Chickasha all her life and opened the Bee Hive Day-care Center in 1997. She was president of a local children's association and made costumes for the community theater...