ball python going on two weeks without feeding

i have a 160g ball i feed her one mice once a week she been refusing the mice for the past two weeks is this normal for a snake her size

Live or f/t?

Any and all information you can provide us about the enclosure, how often you feed, if its dead or live prey, etc. All this info helps us tremendously so we can figure out the best direction to go as far as suggestions are concerned.

i feed her one live prey onnce every seven days and i feed her in a seprate tank

Not enough information.

1. What is her/his enclosure like.
2. Feed her/him in the enclosure, not a seperate one.
3. Temps?
4. Humidity?
5. How long have you had her/him?

All this is needed information. Again, from what you say, only advice is feed her/him in their enclosure, and try to leave in overnight.

First off no need to feed in a separate tank. Feed in the enclosure. All the myths u hear are false. All it does is stress it out.

her enclosure has to seprate hides one on the cool and one on the warm side cool side is about 80 degrees during the day and the warm size is about 95 degrees and humigity is between 50-60 and i use eco earth for bedding

I'd recommend checking out this article by John Berry that covers many reasons BP's may not eat.
http://www.worldofballpythons.com/ar...-ball-pythons/

Leave her alone for about 4 or 5 days and try again. Don't overwhelm the snake by trying too often. I figure try once a week and see if she/he accepts. What is the size of the tank or enclosure?

i have her in a 20 long tank