"Kate always says, 'Don't get lost in being a mom. You still have to be you,'" Brenda said. "She always pushes that with me, and I'm so grateful because it's something that we forget. We're working so hard to focus on our kids and you feel so much mom guilt when you take a second for yourself."

She added, "To be the best mom, we have to be the best version of us. And Kate was really good about being like, 'Hey, don't worry about it. Let it go. It'll be OK. Remember, you need to focus on you."