Maybe because of it, she loves to role play as a doctor. I focused on her and I found that her sequence of action is the same as the doctor. She will ask her patient's condition (her elephant) then, she will take the stetescope to listen.
After that, she will measure the blood pressure, give injection and medicine.
We, as her parents had nothing to ask from her except for her health. We are taking more precaution so that her condition could get better. We changed our bedsheet regularly, basked the mattress and soft-toys under the hot sun once a week, cleaning our home; both indoor and outdoor to almost 99% dust-free. Hopefully, all our efforts worthwhile.