My condolences to you and your family.
I can tell you that I don't think she found peace, as I KNOW she found it. Her suffering from her ailments is over.
I'm not a religious man, so I don't pray. But, if you understand that, I'll tell you that you and yours are "in my thoughts".
Someone said we're all a big family here. I've found that to be true. So, that makes us all brothers and sisters, so to say.
Well, this brother has got your back, and we're all here to talk to as you need us.