Need help Identifying Oregon snake, Wild Albino garter?

[AlbinoSquiggle]

This is my first post but I have spent much time reading through these forums and have found a LOT of useful advice and information.
I live in Eugene, Oregon and my story starts around June/July of this year. I was working out in the garden when I noticed something light colored move under some plants. I began searching to soon discover a light colored snake. I had no clue what kind it was only that it had to be a baby since it was so small. At the time she was approximately 4" and skinnier than a night crawler. I brought her into the house and made a small home for her in a tupperware bin. I spent several days researching how to properly care for her and possibly what type she may be. After about a week I released her back into the garden figuring she had better odds of survival in the wild.
As the summer wore on I encountered her many more times as I worked int he garden. I was happy to see that she wasn't scared off by being captured for a week.
Eventually I decided to catch her again and house her to eliminate the risk of another critter eating her or meeting her fate at blades of the mower or tiller.
Currently she is housed in a 10 gal tank with a ZooMed UTH (sidemounted). Daylight is simulated with 2 - 12 volt, 18 watt incandecent lights. Substrate is typical aquarium gravel, hiding spots on both sides. I feed her worms cut into bite-size pieces and every couple feedings she is fed a couple small slugs ( somewhere I read they are more nutritious).
She has shed 3 times since I have had her, not sure if she shed at all while she was free. Not sure of her lenght but I would say approximately 9-11"
I want to do all I can to ensure her continued survival and someday maybe even breed her to keep her genetics going.
The questions I have are:
Is she a true albino or just lighter colored.

Is she a checkered garter, or what?

Can you handle garters too much? For example, is handling them everyday too stressful?

I started my worm farm from worms in the garden are OK to eat?

Should I have a heat lamp as well as the UTH?

How often should I mist the tank? I try to mist occasionally but have no set approach currently.

Thanks in advance for any help!