Looking for guidance please. My mum is 70, has MS and is jn an electric wheelchair. She has a catheter. Looking to buy more better fitting trousers for her. (She wears the same M&S trousers she's been wearing for decades.) They don't fasten correctly, are uncomfortable etc. She is frail, slim legs but apple tummy area. She can't handle wide-leg trousers and doesn't want joggers. Looking for a nice pair of trousers, suitable for 70 yr old lady.