Hi and welcome.
Hun, i hate saying this but the iPad was an excuse. Your mum is looking. For what, she probably doesn't know yet, and she may write this up as experimentation.
By far the best thing is to be open with her, and let her know how you're feeling - even if you are feeling uncertain about your identity. By doing so, you will be able to directly counter any question of 'there were no signs' types of questions later, as your identity becomes clearer.
Early involvement may also help reduce resentment, and get you seeing a professional for help, earlier than you expected.
Take care, and let us know how you get on
Rowan