(PHOTO) Twitter: ‏@AdrienneMaloofAdrienne Maloof at her OMG Cases launch party

Adrienne Maloof made her first public appearance since news of her separation from Paul Nassif broke and the reality star appeared to be in good spirits.

The "Real Housewives of Beverly Hills" star, who was without her wedding ring, spoke out regarding her looming divorce from Dr. Paul Nassif at a launch party for her latest business venture in California recently.

"I have to say, like any marriage this is a time where there's a bump in the road. We're working on it, it just happens to be on public display. It is very difficult," Maloof told RadarOnline.com.

The 50-year-old will reportedly seek primary custody of the couple's three children, despite the Beverly Hills plastic surgeon requesting joint custody in his separation filing.

"It's been difficult, so I'm looking forward to a positive resolution. The most important thing is I have beautiful healthy kids," she went on.

It is unclear why exactly Nassif filed for separation, although the couple is often seen bickering on the hit Bravo TV reality TV show. Reports of an open marriage have recently begun swirling, none of which have been verified by the pair.

"Things have not been good between them for a while. [Paul] says they haven't had sex for ages," a friend of Nassif's allegedly told Star Magazine, adding that "they just try to have very little to do with each other."

Maloof, who was born in to the prominent and wealthy Maloof family, is co-owner of the various business holdings of Maloof Companies, including the Palms Casino Resort in Las Vegas and the Sacramento Kings basketball team.

Although the estranged couple allegedly has a prenuptial agreement, Maloof allegedly expects that Nassif will go after her fortune during their divorce battle.

"[Adrienne] thinks Paul will try and go after her money but their prenup is ironclad. She said Paul will not get any of the Maloof family fortune," the source said.

"She isn't afraid to battle it out in court with Paul for her family and kids. They are the most important thing to her and she's not going to give up or give in to him," the insider added.

Maloof was out promoting her OMG Cases, a new line of designer iPhone covers which are sold at Kitson, and the mother of three explained how she developed a strong work ethic.

"My father instilled a hard work ethic in all of us; I want to show my children hard work and why not take it and make your own brand what else would you do?" Maloof said.