Kelly,
I wish I could say something real profound and ease your pain. Your feelings are real. There isn't a time limit for grief, each must walk that path in their own time. It isn't something you can rush!
You sound like an amazing teacher, your students are very lucky! Take one day at a time. You can't loss that passion, it is still there, in your heart, give it time!
Together, your family will find a new "routine" I know you don't want to, and I am so sorry that you have to, but together, you will make it through.
Please know we are all here to support you, let us know how that first day back goes,
Dana