Lucy I am sorry for what you have been through, it must have been the most awful thing in the world.
Please accept others here have had similar dreadful things happen to them.
In oldgrape's case, the issue isn't not being with her children for the weekend, but an awful lot of bad stuff happened to her prior to this weekend.
We are very protective of her, but of course, you had no way of knowing this.
Check out some old posts, lots of us rely on other kind souls on here when we need help.
Sorry for what you are suffering,
God Bless
Missy