A 65-year-old woman with moderate persistent asthma, well-controlled on Salmeterol/Fluticasone combination inhaler (Seretide 250 Accuhaler) one puff BD and Salbutamol PRN, is found to have osteoporosis on a DEXA scan (T-score -2.6 at hip). According to guidelines, what preventative measure specifically related to her asthma treatment should be ensured?