Q: do not want daughter to get my texts and mail on ios9.3.1

Are you sharing an Apple ID with your daughter?  If so, you shouldn't.  Each person should have their own Apple ID.  Use Family Sharing instead.  You should then be able to restrict what you share with your daughter.  See:

Family Sharing - Apple Support

Set up Family Sharing - Apple Support

Family Sharing and Apple ID for your child - Apple Support

Manage your child's account

Children enjoy the same Family Sharing features as other family members and, by default, can access the same music, movies, TV shows, books, and apps. You can limit what content your child can access on the devices they use by setting Restrictions on an iOS device or Parental Controls on OS X and iTunes. https://support.apple.com/kb/HT201089