I would also unfriend her. That would be the simplest way to avoid her talking to you.

I know you to be a fair person. So if you say you're not being harsh, I believe you...

You were vague and now you're just being dramatic and look, it gets attention.

And look, it gets attention.

I am dramatic and it got me attention. My plan worked.

'attention' you are getting by being needlessly mean?

or maybe even just delete your half-sisters comment and leave the rest of the comments intact.

go through the help section if you aren't sure how to do that.

or get someone to help you....and yes you can remove her post.

But I would see this as an attempt to patch things up and an expression of regret for the rift between you by someone who finds it difficult to express those kinds of feelings. It doesn't sound hostile, though possibly self-centred.

But I could be entirely wrong and it's totally up to you in any case.

Toxic to say the least. I'm very glad she doesn't want to be around me either. She's one of those who probably loves Sarah Palin and she's a born again Christian who wants me to go the deepest recesses of Hell. She wrote me a letter once describing in great detail what was going to happen to me in Hell. It was pretty obvious she relished the thought. She epitomizes the hateful Christians. The last time I talked to her she was claiming that God hates gays and she was spewing so much hate that I hung up on her. We haven't talked since. I wrote her once to let her know our mother had died.

If you can still 'block' people from checking your page, I would do that too.

How some we want nothing to do with keep popping back into our lives with all the social networking that goes on today.
I believe the individual who said unfriend them is the way to go.