My little Jersey did this when we first brough her home. It lasted a couple of weeks and then stopped all by itself. Jersey was 10 weeks when we brought her home and she's now a bit over three months so I'll say that she stopped at around 11 weeks
Just keep telling her no. Also, it was suggested to me to use meat tenderizer on her food. I didn't try it as she just outgrew it on her own, but you can use the search button and see how others dealt with it. Elaine