By " Defy the means" I'm going to say it means defying the means of normality since she is a wizard and she can pretty much make everything easier thus "every things gonna be a breeze" For the second verse I'm going to say she gets a bit carried away and starts using magic for everything such as writing her book reports and making her bed. The 3rd is simple Alex is always going to extremes and getting in trouble for doing some crazy stuff. And finally the fourth verse "Everything is not what it seems when you can. Have what you want by the simplest of means" So by using magic to get what she wants( which is most of the time) Don't expect that what she does or gets is normal or ordinary ((Not sure if that made much sense sounded better in my head ^^; )) "Be careful not to mess with the balance of things" well because everything can get all messed up and go wrong which happens a lot in this show ^^ This is just my guess that's all.