I have found that nothing is said without a smidgen of truth. For someone to be that socially inept and so in need of attention, there has to be something else going on in their head. She could be that lonely or narcissistic or maybe she is just one of those people who manipulate people as a way of life. I take very little personally. But what ever it was she was wrong to imply such things in your home. And without any defense from her as to why she said such things it was right to ask her to leave. My natural thought would have been to assume she had a lot more going on in her head than she wanted to talk about. I might than explained to her that those subjects are personal and not a joke or a means of getting attention and not welcome in my home. I am not certain I would have asked her to leave only because I am never certain as to why people say what they say. It would have been an awkward evening though if she had stayed. You did the right thing in your home. But if someone is her friend maybe they can talk to her. She may not be suicidal but something seems off for her to act that way. That situation was awkward at best. Sorry you had to go through that.