State about to take my babies to no fault of my own... read this mess

Hey guys. My wife and I have taken in our niece and nephew and they've lived quoth its gone almost 2 years now. They are now 3 and 4 so yeah we've had them a long time given their ages. After getting them be became state foster parent to give them the best care we could. My parent stepped in and got their older 3 siblings because the family defaulted on the case plan about 6 months in. So we have the youngest two and my folks have the oldest three. They all have psychological issues and therapy weekly. The department is preparing to remove them from our homes in order to place them all together in one home. The maternal grandmothers home. She did raise the oldest boys, twins now age 10. She had the middle girl several years now age 8 but she's never had the youngest two at all. She's 60 and she had a real tough time raising the younger 3 prior to this so we know this will be a terrible situation for the kids. Who at 60 can handle 5 children all under age 11? Everything will be an enormous feat. She refuses to admit she may have a difficult time with anything at all simply because "I'm their grandmother". Now, the therapist for the 3 oldest kids and the therapist for the younger kids both disagree with the dept putting these children in the same home given their issues. The 10 yo boys can actually be a physical threat to those around them due to severe anger and psychological issues that were gutted what... caused by trauma... where?... in the household of their grandmother.

We have obtained an attorney and are coming out swinging to help these smaller children from going to a home with the siblings they've never lived with and a woman who can't care for them all even in a perfect world. I just need some encouragement because my wife and I are 32, no kids and can certainly care for these kids. We are legit family to one of them and we're in their lives before this happened. I just cannot believe the dept is so strong to disrupt the children's lives just to see if grandma can do it solely out of the desire to place all siblings together.

There is something called a sibling waiver that can be signed and this would release the dept from the requirement of planning the kids together. This is a great example of a case where a waiver could be used. Even the guardian Ad Litem (kids attorney) said that in November.

It's just insane for them to think she can handle it and or won't be detrimental to these children. Hell she lives alone and has no support network. All her kids are drug users ans have lost their children to the state even.