You really need to get her a lawyer right away. This is a very serious charge and she needs help immediately. She is facing serious time if convicted. I hope that helps.
Robbery can be charged as either a Class C or Class B Felony in Indiana. Class C Felonies carry sentences of 2-8 years in prison. Class B Felonies carry sentences of 6-20 years in prison. Go find her an attorney, immediately.