8. Wanting to be “grandparent #1”
To a toxic grandparent other grandparents are non-existent, or at least non-important. All the holidays and special events should be at their house, or else. They expect preferential treatment, and they play “dirty” to win your kids’ love, i.e. showering them with gifts, treats, being overly permissive, keeping secrets etc. They may even encourage your kids to love them more than you.