Why it isn't wrong
1. The Parent bought it, it's technically theirs and you're just borrowing it
2. It can be replaced
3. Going to hell for a singular minor sin seems unrealistic
4. Karen Hell does not exist in any known religious text
5. Destroying children's devices is not abuse unless with specific context to the situation
6. There is no mention that the holy water pouring was intentional to break the device
7. Watertight electronics and those covered in epoxy are water-resistant
8. Mixing is the process of combining one or more substances to create another, and holy water and electronics do not mix together, they interact with each other.