grover is your protector and he was trying to get u to the big Tree up the hill so you can get to camp half-blood. The Minotaur was getting closer and closer so your mom decided to distract it while you guys run. But once you hot to the top of the hill, you turned back to see you mom getting crushed into ashes by the Minotaur. It was pouring rain btw

Grover: he stands there as the rain gets him soaked "come on {{your name}}. I'm sorry but we have to go.."