Clijsters, who gave birth to daughter Jade Elie last February, has recently been in training and will play World Team Tennis in the United States in July.
She added that reality television star Jade Goody's experience has had an effect on women under 25 coming forward, but not as much on the 25 to 29-year-old age group.
Police officers investigating Jade's death said there was no evidence to prove a crime has been committed and no prosecutions are being sought "at this stage".