Welcome to Monstrous Miss Sophie's Enchanted Salon of Healing Volume 1

Her powers may only heal skin-deep…but she’s determined to mend every wound with all her heart!
Meet Sophie Olzon, the only daughter of a wealthy merchant family, cursed from birth with a mysterious skin condition. With her rough, bark-like appearance, Sophie has been cruelly nicknamed “The Monstrous Miss” by her peers and bullied relentlessly at school until she could bear no more. Forced into isolation, she retreats to her family estate and dedicates herself to mastering her peculiarly weak brand of magic that can only heal surface wounds.
One fateful day, when Sophie nearly succumbs to the weight of her condition, a forgotten truth hits her—she once lived a life as a single mother in modern-day Japan! With renewed purpose, the Monstrous Miss opens her heart and doors to those seeking her unique brand of healing.

[From Cross Infinite World]