Sounds like she needs to be using the laundry facilities more frequently. Clothes can get a pretty “ripe” odor and sometimes regular laundry detergent doesn’t cut it. You will have to take her aside and tell her in the nicest way possible the there is an odor coming from her drawer and clothing. She will need to invest in some laundry products that can cut odors and a change in deodorant might be in order too.