If only Anna and Elsa have grown up with not just all ordinary, but also all magical, less traumatic memories instead of having to grow up with all ordinary memories/unprotected, traumatic childhood memories of one accident, Elsa would’ve loved her own ice powers too much and seen the potential in them!
Growing up with unprotected, traumatic childhood memories of one accident’s a very heavy weight to carry on until adulthood, however, it (growing up with unprotected, traumatic childhood memories of one accident) made Elsa into the person she is, too, which is harsh, however, it (growing up with unprotected, traumatic childhood memories of one accident’s) is an important part of human development.