Reddit mentions of Zoo Med Eco Earth Brick 3 Pack

It isn't very good for spiders. Terrestrial spiders don't climb a ton, but when they do and then fall, they take a HARD fall and have pretty good potential to rupture their abdomen on this substrate. I use this for all my tarantulas it's great. It hold moisture really well, is great for burrowers, and is nice and soft for your spider.

I would also have to agree that this spider is in heavy premolt. In the next week or so expect your spider to flip on to it's back and shed it's skin. I wouldn't try to handle it or anything else until this happens at it is the most stressful time in your T's life and very hazardous for it's health.

When I get a new spider I wait a week or sometimes more to feed them to let them get acclimated to their new home. I would suggest this for you as well.

Did you catch it wild or buy it in a pet shop? Did they have it labeled? If it's wild caught then we will need a location (state, city) to closer pinpoint what type of tarantula it is. It is an Aphonopelma of some sort, just not sure which one.

EDIT: This is an ideal setup for your tarantula right now. Notice the high substrate level and smaller enclosure. I would also say the tank is big for a 2" spider, but keep it around cause it will be able to use it as an adult

You need to get her off the sand... it might make her happier and improve her appetite, although Rose Hair's are notorious for going on hunger strikes. I'd put her on one of these two:

http://www.amazon.com/gp/product/B0002AQDYA/

http://www.amazon.com/Zoo-Med-Earth-Brick-Pack/dp/B001F998AS/ref=sr_1_2?ie=UTF8&qid=1372339917&sr=8-2&keywords=zoomed+eco+earth

edit: removed a bad suggestion. The two good suggestions remain. Carry on.