Help. California Kingsnake not growing.

[barbicrash]

Ok so I didn't go into it on my welcome post but I have a concern and if anyone has any advice or suggestions or even reassurances I would greatly appreciate it.

In November 2013, I bought a California Kingsnake hatchling and was told she was 3-4 months old. She is not the banded type, she is mostly white with black stripes and a mostly black head. I named her Sindel (she was sexed at the convention). I was told she was being fed frozen pinkies once a week but when I attempted to feed her a thawed frozen pinkie, she got annoyed, rattled her tail and refused to eat it. I found a nearby reptile shop that sold live so I tried a live pinkie and she ate it and has been eating them ever since. I try and feed her once a week but there are times when it turns into 10 days, sometimes even 2 weeks due to my work schedule. A few days ago, I did the math and realized she was about a year old but she looks only very slightly bigger. When I asked the guy at my reptile shop (he's very knowledgeable), he showed me some banded kingsnakes that were 6 months old and they looked fatter than mine and slightly longer. He said I need to move her up to fuzzies which is why she hasn't grown so today I bought her one and she ate it. I'm now going to start feeding her two fuzzies a week because I feel like she's very small for her age.

Anyway, my question is, I have heard of this "power feeding" thing and that its unhealthy. Would you all consider two fuzzies a week to a possibly underfed snake as powerfeeding? Also will she grow as normal now that I've upped her meals considerably or have I stunted her growth or something lol? She doesn't seem to be sick, she's responsive, is very active (probably hunting) but hasn't shed for a few months. She has some loose skin which I thought was her about to shed but maybe its because she's underweight? I live in Los Angeles, so heat is rarely an issue, especially now that its July. Shes in a ten gallon and has plenty of room even with the hides. If you need photos, I can take pics and post them so you can all see her size. Sorry for the uber detailed post, but this is my first snake and the Internet has conflicting solutions. Oh and yes I realize that one pinky every 10 days for a hatchling isn't enough but like I said, I'm going to be much more diligent about her feeding schedule.