Get a cheap Door-Bell Camera. $30.00 for 6 months of Basic (Including Motion Detection) and put it by the door, and whenever they try to go for the door, your phone will ring, alerting you.

My wife put a tracker on my phone it helps her with me.

Safteynet.com
It's a gps braclet that links to the police depth that can be activated by them once you call to help find withing moments.

https://www.wtsp.com/article/news/local/hillsbo...

We use the SyncUp watch from T mobile. It gives a general location, but precise location can be turned on remotely.

Here is another option for a door lock. You lock this from the inside at night and it's very difficult for children to unlock, especially if it's mounted high.

AceMining Door Reinforcement Lock Withstands 800lbs of Force - Silver Extra Door Lock with 8 Screws Prevents Unauthorized Entry,Add a Door Security Lock for Home Safety & Privacy https://a.co/d/8R2qNEd