HELPED! Strange new co worker is very creeped ?

HELPED! There is a very strange new co worker at our offices and she is very creeped. Her name is Donnas and she has been very weirds every since she came to our office branches ok? For examples, i came in to works this morning and found donnas hiding behind the bushed plant and i saw her and just stared at her with my mouth wide open and my jaws drooping and said "DONNAS quits it out ok? i see you you are not sneaked ok?" and she just adjusted her bodies into the potting of the planted even more and so i just walked away. so then i am sitting at my cubby cube chatting with Janet about our afternoon tandum bike riding plannings and i see donna run by with planting soils on her clothings and she goes into our copped room so i told janet she needed to hangs on so i could checks up on donnas and she was hiding behind the copped machine. I am getting very creeped by donnas and then when i left work for lunches she was hiding under my minis van and really sacred me ok?