I'm sorry, I had to remove the pattern we can't have full patterns typed out due to copyrights. So I removed the pattern and added a link to the tea cozy in question. If you have any questions, please ask.
How many sts does she have now? I see that your trying to increase to 159sts. It's calling for K3, increase 10, K3, increase and so on to the end of the row. I did look it up on Ravelry
and didn't see any errors.