I'm so sorry, Darla. I'm not here because of my own illness (it's my dad), but your children are exactly the ages of mine so reading your message brought tears to my eyes.
If by treatment you mean cure, then no. Nothing I've read anywhere suggests there's a cure. All you can do is work with the best doctors you can at the best cancer hospital available to you, and try to buy as much good time with your family as possible--hoping all the while, as we all do, that there's the kind of miracle breakthrough before it's too late. It sounds like you've already been through so much, I can tell you're an incredibly strong person.
Can you find your way to living in the moment, instead of thinking about those future events that you're afraid of missing? No one can tell you whether you'll see those things happen for your kids. But even if you were healthy today no one could promise you that. We aren't given to know the day and hour, any of us. But you can plan special days together right here and now...make memories together that will live on in them, no matter what...hug and kiss them a thousand times...teach them what you can in whatever time is given...
My heart aches for you. It's my second-worst nightmare, having to leave my children before they're grown and truly launched into the world (the worst, of course, is something happening to them). You are in my thoughts, and I hope your treatment goes as well as it possibly can.
I'm going to go hug my kids now, but I'll be thinking of you and yours.