Desperate help needed

Hi. I currently own a roughly 4 year old stimpson python, and I think something might be wrong. I am really really in need of help since I am a pretty anxious person. I currently live over 400 kilometers away from my nearest exotic pets vet, and my other vet clinics can't take her/him (hasn't been probed) in for a check up. She hasn't been eating very much and seems too small for her age. She is in a large tank which is about 1.4 metres long and 70cm high. She is about 1.1 - 1.2 metres in length herself. But she is thin and she doesn't seem the right size for what I have seen of stimpson and children's pythons. It has now been almost a month since she has eaten and I'm getting worried. She has 2 regulated heat mats and a heat rock, and she gets uv almost every second day. So I am really not sure what is going on. I really need help, is there something wrong with my snake?

(Edit) I was asked to put some photos up of the enclosure, so ask and you shall receive. I also wanted to add that she is a very (contrary to popular belief) loving snake and loves to be out and about in the sun with me. She has never bitten me or struck out too. None of her behavior generally has changed other than the fact she isn't eating (she was a massive foodie and would eat straight away). She burrows, drinks, stretches, yawns, and has been doing her "business" since the last time I fed her. !¡! I AM CREATING A NEW POST WITH THE PHOTOS. ILL ADD LINK INTO COMMENTS !¡!