dont kno what legal aid is like in other cities/states but with the brisbane legal aid office, u just walk in anytime, fill out a form and wait ur turn to see a lawyer for advice. whether or not u can apply for legal aid is another thing.
u can atleast get some good advice neway.
even if she signed the paper, it doesnt mean much cos there is not J.P. (justice of the peace) or any type of witness around, she could have been in "shock" from the accident or under "duress"
(having been thru court myself where a similiar signed agreement was thrown out for the reason of having no 3rd party sign it. learnt that the hard way)
the best u can do i guess is
1 file a police report if u can, even if they cant do nehting its still there.
2. see about the video footage showing the accident
3. go get legal advice (whereva u can)
3a. lawyer may recommend u send her a letter demanding payment within 14-30 days or u'll be forced to take court action.
4. go 2 court if she wont pay up, and screw her 4 everyhting she's got.

