I agree with Su Lin. One of the fundamentals in Martial Arts is just take your time, dont rush in trying to get something right straight away.
Flexibility takes time, lots and lots of stretching and training.
As you have only just started dont expect results immediately, they will fall into place in time. Concentrate on the basics first (footwork, rooting, stances etc etc) the rest will surely follow.
Rushing things and expecting immediate results is a major problem with the MA community. One of the main reasons people leave a club or drop out is because they dont feel they are getting results quickly enough. Its like 10 years ago, for example, we would be ok with the internet taking 30 seconds to load a page up becuase we were happy with out 56k modems, nowadays with broadband and high speed connections, we get frustrated if google doesnt open up in 2 seconds. Its the same with martial arts, people get fed up with doing the basics and just want to learn how kick and punch. Its pointless. THe basics are the most important thing. Wihtout those, kicks and punches are usless.
In a nutshell: go with the flow and let mother kickboxing take her time
