Hello,
I need advice and help, thank you! 
I have 3 children aged 6 to 1, I work full time, my husband works abroad until the beginning of next year and my family is abroad.
We hired a nanny a month ago from Germany (our kids are fluent in German). She lives with us. I've had doubts about her gradually building over the past couple of weeks but now I am determined to get rid of her. She has no empathy for our children, she is mean to them, she doesn't play with them or shows them any affection and simply spends her time telling them off. I was feeling it over the past few weeks but I took today off and spent it with her and witnessed it.
My real first big worry started a couple of weeks ago when my 4-year old middle child had a temper tantrum when they arrived at an activity after parking the car and she left her alone in the car and went off, effectively leaving the car park with my other two. She said she only left for 5 minutes but I can't bear to think what could have happened. I know I should have sacked her right there but I am alone and I have no help or solution. I tried to be kind and put it down to inexperience but now that I have seen how unkind she is to them in general I don't feel that my children are safe physically or emotionally around her. My eldest told me that she slapped my middle child once last week.
She has two weeks notice period if I sack her but I don't think she will be professional about it and I worry for my kids for these two weeks. Paying her these two weeks and just letting her go means a lot of money though and I'd rather not do that. Though my children safety is of course much more valuable and I'm ready to go down this route of just getting her her 2-weeks pay and never seeing her again.
I feel I should use the unattendance event as gross professional misconduct to sack her with immediate effect but is it too late to do so? And I have no records of it.
Also she is foreign, will she refuse to leave our home?
I am sure I can get a temporary nanny if needs be though I would prefer to avoid unsettling my children so often but I just need some advice here.
What would you do?
Thank you.