Seeking for witnesses!

On 28th June 2010 at 10.22am on PIE towards Changi Airport right before BKE Exit, a lorry collided with my sister who was riding a Yamaha X1R with Hello Kitty Decal (They call her the Hello Kitty Rider)and took her life.
Please help! If you happened to have witnessed my little sister's fatal accident, please contact me at my email; audreyguomj@gmail.com