As she prepares to promote her book, I Just Want You to Know: Letters to My Kids on Love, Faith and Family, and competes on Dancing with the Stars, the mom of eight is facing another fight with ex-husband Jon Gosselin over custody and child support.
But as much as she dreads another round of legal skirmishes, she says that fear is playing no role.
"I'm not afraid I'll lose my kids," she tells PEOPLE in this week's issue, on newsstands Friday. "I won't lose my kids. We're glued together, as a package, and nothing, nothing, will stop me from being with my kids."
"A law?" she continues, "Yeah, right. Don't mess with me when it comes to my kids. You are never, ever going to win."
Claiming she's not spending enough time with her children because of her work demands, Jon is seeking primary custody – which Kate now has – and a re-evaluation of the $21,000 in monthly support payments he's ordered to make.
Kate is opposing that, but doesn't want a war with her ex for the sake of the children. "I want nothing more than for [Jon] to set up a stable life for himself," she says, "so that he can be part of making our kids' lives more stable."