If you keep laying into her then that IS making it more difficult. If you have trouble with her on PM, block her. But she has caused no trouble here in the threads since she apologised for causing any- the only trouble has been attitude towards her.
She is a poster like any other, do not lay into her just because she opened a thread.
Yes she was rude. That has been dealt with. Now she has apologised and is trying to be friendly. If she breaks the rules again she will be dealt with more permanently but she hasn't! And so she opens a thread. How is she meant to stay friendly if you criticise her just for opening a thread?
She has been well behaved this last day. Let it go. If you don't like her thread don't post in it. If you don't like her, stay away from her- but don't deliberately lay into her, that is not helpful.
No-one deserves to be hounded, at all. You don't have to like her but if, whilst she is behaving well, you are the one making hostile posts at her then you will be treated as the flamer. She did nothing wrong with opening this thread and there was no need for a comment from you about it.
And that is how it is.
Your disagreement is noted. Now don't do it. I don't want to take people to task for flaming over this but I shall. The discipline structure oif this board will not be replaced by some form of peer pressure, mob rule or collective mentality. Her behaviour before has been dealt with and she now has the rights of any poster; I will not accept any poster being hounded, her included.
You would be best advised to stay away from her, rather than pester her.