I accidentally stained a hotel pillow case with green hair grease?

It's a new hotel too, to make matters worse. It's not a deep green, it's a real light green. A huge stain! I removed the pillow case, and it's a bit on the pillow itself too! I'm freaking out. And I can't tell my mother or she'll freak out even worse and make it seem like I did that on... show more It's a new hotel too, to make matters worse. It's not a deep green, it's a real light green. A huge stain! I removed the pillow case, and it's a bit on the pillow itself too!

I'm freaking out. And I can't tell my mother or she'll freak out even worse and make it seem like I did that on purpose! What do I do? Hand wash it with hot water?! I'm really scared. Please help me.
Update: White pillow and white pillow case.
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