You might be able to find a game or two. The thing is that students at the PUCMM do not have that much time for sports. It is academics first, all the time.
When you get to Santiago, go down to the Palacio de Deportes and look around for some female basketball. Talk to the players and ask. There are tournaments, not very many, but they do exist.
A lot will depend on what you are going to study, what your class schedule is and where you end up living.
HB