The first step is figuring out where she gets the phone. Does she get an allowance and use that money? Stop her allowance. Her friends? Limit interaction with those friends....
Most IAU-approved names are derived from Arabic and Latin terms. A few others derive from other languages. English-derived names are rare. If you use a private (unofficial) registry, you can...
No, even if it didn't infringe on any copyright laws it would still be confusing for your potential students and customers. It would be better to change it, even slightly...