Since I changed little miss muffetts substrate, she wont go on it, she spends all her time on the side of the tank, i changed it for potting soil, and made it more deeper, but since the change she hasnt been on it at all and I changed it Monday.

I wouldn't worry too much - she spent a lot of her time on the side of the tank anyway didn't she? She probably does go on it, but when you are not watching, like at night

Ts can be funny animals! - our cobalt blue is a burrowing T but has never made his own burrow,. we provided one for him when he was a baby but since he grew out of it gave him new soil to make his own burrow in... not a hint! In fact he even covered up the burrow that we started for him! We have since put in a piece of bark, in the hopes that he will make a burrow under there.. still not a sausage! Sometimes sits under the bark, sometimes curls up in the corner of the viv, even occasionally climbs on the side of his tank!

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"If you know everything you may as well blow your brains out because the reason for existence is to learn more everyday." - Mark O'Shea, 2004