The treatment should be according to the problem she is facing because of PCOS. Since you have a child already infertility is not the problem.and if she has menstrual irregularities then that can be cured by conservative management.removing ovaries is not at all an option since it will lead to much worse scenario due to loss of normal hormones.
Next Steps
Consult your gynaecologist with the exact symptoms you are having.
Health Tips
Try regular exercise and mindful eating habits