Hi Jase
I work in Sydney at a law firm. We have a case at the moment quite similar but our client actually has a witness.
It will be very hard for you to prove that she was in the wrong without any evidence i.e witnesses, pictures or video footage.
I would say you should really investigate with the centre and see if they can pull up the footage and hope for the best the cameras cover the section the incident occured in first, be quick tho coz they only hold footage for a small period of time.
If you have no luck with that and you want to take it further you should seek legal advice if you cant afford it you can always go for legal aid. I will say it is going to be VERY hard for you without evidence as its one persons word against the other.
In any event the insurance wont cover you and thats probably the best option in this case when you weigh up the excess cost and the increase of fees over the year.
The insurance company is within thier rights to refuse your claim as you have no way of proving that the damage was caused the way you say it did and cannot prove it was not done on your own accord, insurance is a tricky business and in most cases seems like a waste of money as u pay so much for it but in these cases are not covered.
To reduce costs in repair maybe you could try pick & payless or something like that. in the event you cant get anything out of her.
You should in any event get three quotes to repair your car then write her a letter stating you have sought legal advice and are advised that she is liable, enclose copies of the quotes and ask for payment within 14 days of the date of the letter or you will be initiating court proceedings.
See how you go with that in some cases people freak out at the additonal costs of legal representation and soforth.
but do it quick or you wont have a leg to stand on.
Hope ive been of some help. let me know how you go.
MzZ Sportivo.