Your daughter needs a qualified criminal defense attorney. It appears if she is being charged with a robbery (Pen. Code 211) - which is felony charge. There may be defenses available to her that could result in the case being dismissed - or at least the charge reduced to a grand theft from a person (Pen. Code 487(c)), which is a much less serious charge on her record.
Apparently the case is over. The prosecutor's petition against her was upheld and she has been sentenced. Isn't it a bit late to be seeking legal advice?
You could possibly explore this with an attorney. Based on what you have provided, it would appear that you should have been notified before the arrest. Good Luck!