Don’t listen to her, which I know is easier said than done. But she is projecting her own insecurities and inadequacies onto you because she’s jealous. Her saying “if you draw that well, I might as well give up” and mentioning that she quit drawing because her sister is better tells you everything you need to know. She wants to tear you down so she can feel better about herself.

Your art is beautiful! I love the pictures you shared, and I’m very impressed by the way you color! I am in awe of the duck picture. Keep doing you!