1st Time Snake Mom, Scale Rot

[MamaKiwi]

Hello!! I'm Kiwi and a month ago I got a gorgeous girl named Wednesday at a reptile expo. She's a mystic potion ball python born 9/9/19.

She's lavender with a white line down her back, and white lines coming from her eyes. Perfectly sweet snake. Zero agression, even when in shed. She has eaten every 5 days like clockwork, even in shed (took her a little longer since I didn't realize she was in shed but she ate and no regurgitation).

My 1st time snake mommy concerns: she has not pooped. I realize this is somewhat normal for snakes, but I've had her 6 weeks, no poop, and she eats every 5 days.

She is also always in her humid hide. I've discouraged it by taking the lid off, because I've noticed dry, brownish scales on her body, which I'm afraid is scale rot.

Can I feed her something larger than a mouse? Is that why she's not pooping?

Can I bathe her with potassium permanganate? I heard it was good for their skin.

Thank you in advance.