According to California law, you do have a right to medicinal marijuana. I've had these matters in Victorville, and it is likely that the probation officer is going to argue that you are breaking federal law, which is non-sense. There's a counter argument to such. My advice is to locate an attorney well versed in state and federal medicinal marijuana programs. Many respectable attorneys offer a free consultation. My suggestion is to meet with one soon. I'm available if you need any assistance.
The response above is not intended as legal advice since it’s impracticable to provide thorough, accurate advice based upon the query without additional details. It is highly recommended that one should seek advice from a criminal defense attorney licensed in your jurisdiction by setting up a confidential meeting. Moreover, this response does not constitute the creation of an attorney-client relationship since this message is not a confidential communication because it was posted on a public website, thereby publicly disclosing the information, which is another reason to setup a confidential meeting with an attorney.
I'm not sure the exact "form" for probation modification to which you refer. However, your p.o. is going to need a court order to get her to back off. Under Health & Safety Code 1362.5 allows any criminal defendant on probation to petition the court for a modification of the probation to permit the use of med. m.j. You p.o. is a moron to substitute her amateur opinions about "addiction" for your doctor's medical recommendation. NA meetings?
You don't need a medical m.j. card, as long as you have a certified recommendation from your physician. The card puts you into a statewide data base and does make it easier for law enforcement to check that you are a valid patient, but it is not necessary to the legality of your status as a patient.
I'm unclear whether she is actually violating you for the med. m.j. If she is trying to do that, the CA Supreme Court ruled a decade ago that your probation can't be revoked for lawful use of medical cannabis. Therefore, it is a defense to a violation.
I think you should not attempt this alone. It will go much smoother and quicker if you are represented by counsel. In such a case, I doubt the county public defender will represent you, so you will have to retain your attorney yourself. If your medical m.j. is crucial to you, an investment in the legal fees will be worth it.
Just off the track a little: has your attorney in the stun gun case satisfied himself/herself that the detention and arrest were not a 4th Amendment violation?
Although there is caselaw supporting a medical marijuana patient's right to smoke marijuana while on probation (People v. Tilekooh), there is also conflicting law allowing a judge the discretion not to allow a probationer to smoke marijuana, despite a valid doctor's recommendation (People v. Bianco). It's not for the PO to decide, though, so talk to an attorney and someone can go into court to fight for you.