Needy behaviour is what you do when you come from a place of "I'm not good enough". For example, you cling to a partner because you want them to solve your problems instead of solving them yourself. You allow others to cross your boundaries. You don't believe, deep down inside, that you can make it on your own but are dependent on others.
Neediness is not a female only thing. Men can be just as needy. Ever watch a guy who loves a woman who is not so much into him?
Unpredictable is, well, unpredictable. Probably meant in a sense of 'she is not doing what I would like her to do'.
But maybe also surprising, not boring, lively etc?