I'd say people doing ordinary jobs, like sales assistants, gym trainers, scientists, accountants, bakers etc can be beautiful, too. It's not like you are either a model or plain, there is a range of beauty. Just in her case, she is definitely not in that range.  Similarly there is a range which would be considered ugly, e.g. we might think a gargoyle considerably more attractive than her, but still firmly in ugly range.