Afashionable lady come to visit your mother but she had gone for shopping. the women did not give her name. all she said was she and your mother had studied together in school , and had not meet mother for last 15 years . she promised to come again the next day . in about 100 words , give a description for these lady to your mother to her to identify her to old friend

If you have to make everything up then:

"Mom, this fashionable woman asked to meet you. She looked really pretty and had long blond hair. She said that she was studied with you in school and she hasn't met you in 15 years. She also had pretty blue eyes and was kind of pale. She had 3 tattoos too. Exactly the same as yours. One of them was a have heart saying BFF's, except she had the left half of it. Mom you have the exact same tattoos, but your BFF's heart is the right half. I believe you guys were really best friends."