If she is afraid of the sinemet...try fava beans/papaya/watermellon....
Get book "Natural Therapies for Parkinsons Disease by Laurie Mischley" and try some of the things she suggests first. Go with your gut feelings and hers. Also, sinemet can be cut in half or smaller ...some people get a lot of relief at first with a very small amount. If I would someday have to take it because unable to grow favas for some reason. ...I would put the smallest dose possible in a bottle of water with some ascorbic acid (vit C) in it and sip on it as needed thru-out the day. This is called liquid sinemet. Do research, PD is a life journey..not a weekend vacation or year's sabbatical. God Bless and guide you both. Aunt Bean