Donna Freitag has breast cancer. Eight days ago, the former assistant women?s basketball coach at the University of Wisconsin underwent the second of six rounds of chemotherapy. The toll of the treatments is predictably heavy, from the nausea and body aches to the loss of appetite, hair and energy. Freitag desperately wants to take part in the 14th annual Susan G. Komen Race for the Cure Saturday in Madison. But even though she maintains it will be a “game-time decision” to walk the course with dozens of family members and friends, she knows her body and must cater to its delicate whims.