Maja O'Brien has not been seen since she made her way to a concert on 28 March.
The Audi convertible flipped onto its roof on a slip road after leaving the M40 in Oxfordshire.
All the latest headlines from across Berkshire, Oxfordshire, Dorset, Hampshire and the Isle of Wight.
Send us your photos at firstname.lastname@example.org
Bits and pieces from the last week
Gavin Whyte strikes a hat-trick to give 10-man Oxford victory at a Shrewsbury side still not safe from relegation.
About these results
The story of Britain’s relationship with the EU
Sign up for our newsletter