I'm so glad that you got in touch with your social worker and she was able to get someone to accompany you to appointments and arrange a cab for you
A absolutely HATE my cane. I really resisted using it in the beginning, but I got used to it. It will take time, but you will, too. Try buying a pretty one... that really helped me.
I would explain to Stella that you have enough anxiety of her own, and ask her to refrain from making noises or overreacting when you are out and about. You need her support not more anxiety. I've had to tell my husband to shut up and back off many times.
I'm sorry that you are still feeling irritable and depressed, and I hope that your toes and feet are in better shape soon