It depends if you take into account her age. I never asked her age (becuase you maybe already know me -- for me the age is just a number and a sort of social construct) but according to her looks, she is maybe the age of your grandmother. (You said you're a young girl so I suppose your grandma is something like her). And because most of the grandmas are not so pretty as the young girls (and the younger selves), you can guess that she isn't someone who I can perceive as "pretty"
but I don't think she is some ugly or scary woman; she is
just a normal, average elder woman. (I am objective and I am not like her -- when get angry to somebody to start to speak bad things about him/her;
it's so childish 
For example, a week or two ago you speak to somebody how he's genuine, gifted, clever or something like this, and when you get upset you're telling him or her that she/he's stupid and other bad words... -- so, honestly I can't say something bad like "Oh, she is hell ugly! Blah-blah!" and I just can rate her objectively like a person with an average face (and maybe, body too, I don't know), i. e. a solid 5/10 woman, for her age).