You need to get a scale and get a weight on her. Feeding once a week, an appropriate sized prey, would be best. Just feed her a prey item that is the same size as her widest point. I wouldn't feed her twice a week, they need a few days to digest. Also, don't handle her for about 48 hours after she has eaten, to avoid regurgitation . I would not use moss for substrate. Too much moisture and they can get scale rot. Honestly, the best thing for humidity, is a tub enclosure. I also post from my phone and had a hard time with pictures at first. There is an app called Tapatalk that I use and post from, it is super easier to post a picture with tapatalk. There is a little camera icon when you are posting, you touch it and it takes you right to your photo gallery on your phone and just uploads them. Congrats on getting your girl to eat!
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