I have a female Lesser Platinum that has been this way since I got her. She postures, hisses, and strikes at anything that comes into her tub. I usually take a paper towel roll and tap her a few times and she at least stops striking, she hisses every minute she's held when moved out of her tub to clean it. She's actually a llittle funny. She's a great eater, but may turn out to be a mouse eater. I'm doing mommy mice but cannot get her to touch a small rat. She's on a mouse in less than 3 seconds. So, she may just be a mouse eater.
The other thing she does which I don't care for, is she craps on me EVERY TIME I soak her. She hold her poo until I remove her from the sink. Within 10 seconds, she's crapped all over the place. It's slmost like she's musking me.
She's beautiful and I don't mind an agressive feeder, so she fine for me. However I can understand how a new snake owner would be put off by this action.
Good Luck!
Jim Smith