MY EX BEST FRIEND hacked my twitter=/?

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me and my closest best friend stop talking a few months back. but a few months back my twitter account also got hacked. when i tried to go on someone has changed my password and my email. so now i cant go on my account. i don't have any real proof she did it but my gut is telling me she did. i asked my mom for advice and she told me to just let it go. and if someone asks you about the twitter page tell them it was hacked. theres really nothing i can do about the twitter page but i need advice on what to do about this whole situation. should i listen to my mom......or confront AND ASK her about which may cause more drama because i don't talk to the girl. ANY ADVICE WILL HELP!!