The school district edits or deletes contacts. I recommend reaching out to your school district who should be able to assist you in deleting or editing contacts from your daughter's profile.
To update your student contact information, log on to your PowerSchool Parent Account>clickonYearRoundUpdate2019-2020.
Please let me know should you encounter any trouble.
I have tried to update several times on year round update but, it will not let me delete the contacts not even the duplicate ones I just want to start over with just mine and my husbands information.