Unfortunately, the decision you made to alter the prescription wasn't a good one. It easily could have landed you in jail.
As far as finding a new pm doctor goes, it will likely be very difficult to find another doctor willing to prescribe opiates, but that doesn't mean you can't get pain treatment. Pain management is more than using opiates, physical therapy, medications used to treat neuropathic pain/fibromyalgia, TENS, injections, and other therapies can help immensely.
Did you file a police report for the theft your daughter committed?