Unfortunately, there may not be much you can do. You could hire an attorney to look over the case, including the VOP. The attorney may find grounds for mitigation. If the time since the sentencing is less than 60 days, an attorney could ask for a reconsideration of the sentence and request it be mitigated. It would be incumbant upon your sister and the family to help gather evidence to present to the judge as grounds for the mitigation. If your sister was placed on probation to begin with, 15 years on a VOP seems a little harsh to me. But, maybe not.
Did she enter a straight up plea or did she have a violaton of probation hearing?
If she entered a straight up plea she can ask for reconsideration within 60 days of the sentencing date. If she had a violation of probation hearing she has 30 days to file an appeal and have an attorney appeal the decision of the court. She can then ask the court to reconsider the sentence within 60 days of the mandate being issued if the appeal is unsuccessful. Best of luck!
It's a very sad situation. You may want to hire a lawyer to go in and file a motion for reconsideration. I hope she wins.
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