Have any of you had experience with adult tricycles? My 85 year old mother mentioned getting one last week and I am wondering if they are easy to ride. Mom has always ridden bikes but probably has not been on one for the last four years. She is worried about balance issues and thought a trike would be easier. Your thoughts?

Her birthday is in early March and I am thinking this might be a good present.

Thanks for any info you can give me!