Post-update, I do say you've got yourself into a pickle, my lad.
It really depends on tone and what specifically she has been leaving in these messages. Although, I have to say, my impulse is to tell you she's bad news at this point.
If you want to play it nice, explain how her barrage of messages is freaking you out. See where that goes. But be mindful of every word you use, the tone of your voice, everything. She doesn't strike me as stable at this point, possibly living in a fantasy land of her own creation.
It really depends on tone and what specifically she has been leaving in these messages. Although, I have to say, my impulse is to tell you she's bad news at this point.
If you want to play it nice, explain how her barrage of messages is freaking you out. See where that goes. But be mindful of every word you use, the tone of your voice, everything. She doesn't strike me as stable at this point, possibly living in a fantasy land of her own creation.