Well done for telling her where to go - and for telling the rest of the mums and saying that they could step up and do it!
Shame you don't have the texts any more - they would have made a great printout 
If she tries to say anything about Monday, remind her that if she tries to dump the dc on your doorstep, that that's child abandonment / child abuse / child cruelty (sorry, can't go back through all 3 threads to find out exactly which of those she said to you about leaving them on their own!) and that they will be staying on your doorstep while you report her to SS and that they can pick up the kids!