Problem relating to co-worker. I need some advice please..?

I read the other answers I agree with them all but what you must do is incorporate what all of us have said and tailor it to each day as it comes because she sound a bit off. You should keep it professional and not address any personal issues or innuendo with her. Just do you and really that is your best recourse. You have nothing to really complain about it is seriously creepy but only a feeling for now, but to be iron clad you could doent her critiquing you to the children even without letting her now it bothers you. You may need dates and issues to recite later it she shows true psycho hidden drama. Pray each day before work!!!! GOD WILL BLESS YOU.