My thoughts and prayers are with you and your grandchildren too...
Yes, with these conditions, I would call too.
But, beware. It *could* backfire. And you might not see your grandchildren again *if* the mother finds out you were the one who called....
On the other hand, the state would be aware that there are multiple problems in the home; with drugs; unsafe living conditions; and mental illness.
You have a very difficult decision to make. I'm so sorry...
Please know that you can call without leaving your name. Just describe the situation in detail. In my state, if they get two calls, they *must* investigate. With one call, they will if there is "reasonable cause" to suspect a problem. The more detail you can give, the more likely you will get an investigation.
Shalom!
Shalom!