This is the woman who managed to walk away from the jet ski crash that put Sean Kingston in the hospital.

Her name is Cassandra Sanchez, aka Cassiie Melinda. And while Sean’s family issued a statement asking for privacy as their boy heals, Cassiie gave TMZ a full update on what exactly happened to Sean Kingston and his jet ski.

Sanchez says … as Sean was racing towards the bridge, she screamed out, “We can’t fit under there! Are we going to try and go under there? Sean stop!”

Sanchez tells us … she believes Sean tried to turn away from the bridge at the last minute … and
lost control because they were going “REALLY fast.”

The next thing Sanchez remembers is waking up in the water in pain. Sanchez says her friends on the other jet ski raced over and tried to help out … with Sean’s buddy trying to position the injured singer so he wouldn’t swallow any more water. They all signaled for help until a boat came to the scene to help out.

Sanchez says, “[Sean] was coughing up blood, foam and pink stuff” … and when he finally opened his eyes, he kept repeating the words, “I’m hurting. I’m hurting”

Sanchez says her ribs and her jaw are still sore — but overall, she’s OK.

As for Sean, Sanchez says “They have a tube down his throat so he can’t really talk, but he is lucid and understands what’s going on.” Sanchez says doctors plan to keep Sean in the hospital for “a couple more weeks.”

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez

Cassiie Melinda aka Cassandra Sanchez