I think you're expecting way too much from a 12 year old's hormones. Her body is just developing - give her time.
Why is it important to you that your periods sync up together? Is this a bonding experience for you? Then find something else! Kids start to rebel in small ways around this time anyway - probably the last thing she wants is to be thinking about your periods, let alone syncing up with you. Try to let that go!
I don't know why your periods are irregular right now. Maybe peri-menopause, maybe the stress of worrying about your daughter's periods, maybe something else. Teach her to track her periods on a calendar, and you do the same. When each of you goes to the doctor, it's good to have a record. But your irregular and "extra" periods are of greater concern, so I'd be sure to mention those to your gyn. If they continue to be wacky for another 2 months, I'd give a call rather than wait for an annual visit.