Answer: Ageist
Explanation:
Ageist is the person who shows a prejudiced and discriminated attitude towards a certain person or group of people based on their age.
Example- believing that older people are not suitable for job as they are weak, slow and helpless
According to the question' scenario, Carlotta has the attitude of ageist .She is discriminating the teenager group on basis of her thoughts that all the teenagers do not behave well with adults.Therefore , she is does not prefer to be present in teenager persisting place.