Not all doctors agree on many different medications. Sinemet CR may not be strong enough to kick in. The symptoms you describe sound as if she needs more sinemet. Maybe you could discuss with the doctor to add levodopa/carpidopa 25/100 1/2 tab to one or two of her doses and see how she does.

Your mother must be lucky to have a daughter as wonderful and caring as you. God Bless and Peace be with you.

Vicky