Your mother definately needs to see a Dr soon. Has she had a recent mammogram?
Hi,
In my opinion your mother should seek medical attention because from what you describe,it could be either an inflammation,infection or a more serious problem.
An inverted nipple is not always a sign of malignancy. However, if the nipple that was not previously inverted suddenly become inverted has to be evaluated,especially when inflammation is involved.
Please make an appointment to see her doctor,the sooner the better.
Best wishes to you both.