Gunjan goes to a doctor to get herself treated for an injury in her hand. The doctor being her distant relative charged her nothing for the treatment. However, after a few days she develops an infection on the wound because the doctor didn't use sterilized instruments. Later on, she is advised by the surgeon to get the infected finger removed. Therefore, she is very angry with the doctor.
In context of the above case:
Can Gunjan file a case against the doctor if she decides to take legal action? why or why not? Give reason in support of your answer