Hi, Tracy.
I'm very sorry that you're not getting the emotional support that you need at home, but as others have said, we are here for ya! I hope that you are able to get physical support at home, because that was a huge need of mine especially when you have children.
I'm not sure if you're being treated at a comprehensive cancer center, but if you are there are likely social workers who specialize in patients/families dealing with cancer. Like it or not, they are all along for the ride.
Your 12 year old daughter and younger children might need some special attention. This is the time to call family and friends, community, or church members for help in many areas... Rides to treatment, cooking, cleaning, child care, respite care, etc. There are website that are tremendously helpful in getting your people together and coordinate all of your needs. We used helping hands.com. I think one of my friends found it via Livestrong. I know there are other sites like it that one could easily find with a quick Google search.
We all know how overwhelming life is right now, but it won't be forever, though it seems that way at times. Just keep coming back and we'll get you through this!

Love in OCF,
Kerri