Saki

Did you mean the character that goes by the same real name, Unnamed Child?

Saki is the survivor of the first Death Forest Movie along with Kazuki Uchida. She survives by getting on Uchida's motorbike and uses his camera to attack Yoshie while riding the motorcycle through the tunnel.

https://hm-hm.net/horror/%e3%83%87%e3%82%b9%e3%83%95%e3%82%a9%e3%83%ac%e3%82%b9%e3%83%88%e6%81%90%e6%80%96%e3%81%ae%e6%a3%ae/4