Lololizzy, you'll probably be given an assessment form for completion about how you felt your training went, what you think could have been done better, etc.
So that'll be something to look forward to! However, I would be inclined to stick to positive suggestions on how she could improve the teaching, rather than slagging off her nasty nature at this stage. For example, you could say that you would have welcomed
*more time to reflect on the correct answers
*more opportunities to ask questions
*increased support before being left alone with customers
*greater tolerance of travel difficulties as you struggled with the location of the training office
They will get the message from this, and will ask you for examples if they are worried.
Don't forget to mention any little thing that you think was good, either. You don't want to come across as utterly pissed off with the entire company. For example, under 'What went well?' you could say 'I was very excited by the idea that I would be provided with a formal, professional training', like you said in your post above. You can still praise the company, whilst omitting any praise for your tormentor.
I recommend this as you are new, and once you are out of her clutches, will want to create a positive impression of your own, as a reasonable, constructive employee, with your new line manager.
Once you have the line manager's trust and confidence, you can confide to her about the bullying when you first joined.
Meanwhile, you and the other trainee need to support each other for only a few more days now, and hopefully you will never have to see her again.