Saw my best friends ghost?

I've been thinking my best friend/epal is dead. Then, in the girls bathroom, I saw some black ripped jeans and black shoes from the bottom of the divider. It was in the corner stall. Even though there are no girls in my school who dress like that, I ignored it and went to the bathroom. While I was in, there was mo toilet flush, no sound of the door opening, no footsteps. Just the sound of the handryer (no tap sound). The person wasn't there. It felt cold in the bathroom and I ran outside. Does this mean...she's dead?