Your insurance company will tell you when you are going to get your cheque - different companies take differing amounts of time - hopefully yours is efficient.
You can't second guess or go back and change things. Don't engage with this person at all - send all correspondance to your insurance company without replying. Tell your insurance company everything you can and be prepared to go to court if you need to. The fact that you were on the main road is a point in your favour.
The argument is actually between her insurance company and your insurance company not between you and her.
Be prepared for her to put in a personal injury claim, it's a bonus if she doesn't.
I deal with RTA's on a weekly basis on behalf of the haulage department of my company - and I have unfortunatley come to the conclusion that people are lying b'strds.