how long have you had her? what i do is since I have apsen shavings for a substrate, I take a small white ceramic tile 4"x4" (like the kind you use in a bathroom) and place it on the substrate, and put a mouse on that. That way the chance of the snake injesting the aspen is next to none, and I dont have to stress the snake by taking it out of its tank. I know it is reccomeded to feed the snake outside of its tank, but honestly, when you get to feeding day having 5 snakes...thats more difficult than it seems.
It is reccomended to take the snake out of its tank, put it somewhere else, let it eat, then put it back. But being a baby in a new environment I would think it would stress it out too much to eat, so thats what i'd do. you could also use a 4x4 sheet of paper or something and place the mouse on it...just as long as it doesnt get on the apsen is my concern.
Also you were concerned about your snake becoming mean...how long have you had it. They don't really like getting "petted." If you're going to pick it up, just reach in, and pick it up. make sure you are supporting its full body though, if you pick it up in the center let the had and tail flop around...it may very well get mad. If it does bite you, it won't hurt. trust me, i get bitten every time i take my blue beauty out...at least 2 times (actually yesterday was hte first time she didnt bite me lol). It doesn't hurt though, and it wont hurt your snake...unless it breaks off a tooth or something but thats highly unlikely, esp. as a baby. But as long as you handle it daily...of course leaving 2 days after it eats to digest its meal...that way you wont get crapped on or have him regurg his meal...you'll be fine. Start handling for 5 minutes at a time, when he gets comfy then go up longer and longer.
Also...know how your snake defends itself. First it will try and run away from you. So keep a good hold on it. Then it will musk you (probably) to try and get you to let it go. Then it will rattle its tail. If all else fails, then it will turn around and bite you. The two intermediate steps dont always happen, but usually will.
i'm not trying to scare you or anything, most likely you wont get bitten. my blue beauty is the only one who has ever even tried to bite me. my texas baridi's rattle their tails all the time...but never musk. after a couple mins they get calm and will relax on you...good luck!
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A fool doesn't learn. A smart man learns from his mistakes. A wise man learns from the mistakes of others. Which one are you?
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Rat/Corn snake care sheet I wrote
Current snakes:
0.1 Licorice Stick Black Rat (Lola)
1.0 Neonate Black Rat (het for Lic Stk's) (Frankie)
1.1 Texas Bairds (Jose and Rosa)
0.1 Blue Beauty (Brunhilde)