Bridemaid causing Issues

I need some advice guys! So, I'm planning my friends hen do, not overly close with the others invited (as live away), but have been overly nice and trying to include everyone.

There's only 5 (Including bride and myself) attending. I only know the Bride.

Anyway, I'd been having an issue with one bridesmaid. No matter how nice I was, nothing was good enough, or cheap enough or what she wanted. Her responses were outright rude, but insisted it up and ignored. I even offered to pay for her room/activities so she could have a monthly pay plan. (She still expects this, however I now realise I am not going to lend money to her, given her unpredictability).

Fast forward a couple of months. I've sent the 3rd plan, which once again she rejects. I sent an extremely polite response, in which I admitted I wasn't able to cater to all, and if someone else was able to throw a plan together for us to discuss, that would be great.

Once again, I received nasty messeges, in which she was attempting to get a rise out of me.

Feel I need to add that I have only met her briefly once, and I thought we'd gotten along.

I didn't rise to it, although it did hurt. The bride later found out and went mad. She knew how much I'd be hurting and thought it was just horrible the way I was being treated (which it was, the girl was vile). A big argument ensued, the bridemaid sent a slew of curses to the bride and was kicked out of the hen do.

Fast forward 3 weeks and I get a call, I was told that she WILL APOLOGISE ONLY IF IT CAN BE CONFIRMED I DO TO. Apparently she's had a lot going on (very trivial stuff but seems big to her) I have no idea what I've done wrong, I purposefully didn't rise to it, I was courteous and responded to her messeges as if they were snide or insulting. She's back in the wedding, and I'm expected to plan for her, but extra accessories (such as sashes/glasses/games etc). And I just don't want to. I feel horrible, I don't want to spend more hours, replanting for her (again) and buying extra stuff, for someone that was nasty and is generally ungreatful. And even taking that out of the equation, I don't even want to be around someone that was that horrible, then couldn't drop her pride enough to simply apologise- or even explain what I've done!?

TLDR: Horrible hen party guest, kicked out, now back. I feel hated and used. Advice because I don't even want to attend if she's going, let alone organise a good time for her. Very small party, so won't be able to avoid her.