((((hugs)))
Please do stay safe. I can't remember if you've done safety planning with the kids, but it might be helpful. DS and I have updated ours as we've moved and we still have one in place. A couple good resources are:
The National Domestic Violence Hotline | Safety Planning With Children Personalized Safety Plan - Domestic Violence National Center on Domestic and Sexual Violence - Safety Plan Resources
When DS and I go over the safety plans, it's always in a general way: What happens if there's a fire; if some one is hurt? What if there's a dangerous person in the house? We've spoken with certain neighbors and confirmed that if there's something going on, it's OK for DS to run to their house to call 911. (DS also knows that if he does go to them and they're not there, it's OK to run to the next house.)
You're doing great in a difficult situation! Wishing you continued strength.