Should I delete my Facebook account?

[Hannah]

So my mom keeps reading my messages I send on Facebook. I'm a 14 year old girl, and I joke around a lot. It's not harmful or illegal or anything, but it's kinda funny and just stuff I don't need other people seeing it, because its between me and my friend! But every time she reads my messages she freaks out, it's so aggravating because I've changed my password a boat load of times and she doesn't get the hint that I need alittle privacy. Don't give me a lecture about how I don't need privacy, because I already know! But should I delete my account so she stops? I can still text me friends and ill still have instagram and twitter.
And I don't give her my password..she figures it out.