Whats wrong with my snake?

[lumpdog]

Well Im back again with a problem ive never seen before. the same new dum that I got from the pet store last week that was a rescue. I said in my other thread how under weight the snake was. she is 3 & 1/2 foot long and 2 years old as they told me. Ok so today is feeding day for all of my snakes & also the first time to feed the dumeril. She cant hit the target how hard she tries. I mean she misses like 2 to 4 inches from the small rat. Is she ********? Its no wonder she is so thin she cant eat. I called the pet store and the dumb kid on the phone told me thats cuz she will only eat a mouse. I went off on him & told him it dont matter what you put in front of her she has no aim. I think I got scammed and she cost 200 bucks. And they said to bad no returns on any reptiles. PLEASE HELP!!!