HI, thanks for using healthcare magic
It sounds as though the area is infected.
You would need to remove the earing because the body is presently seeing this a foreign body. Clean the area with an antiseptic at least twice a day.
You may also want to consider the use of a topical antibiotic
to apply. These may be available without a prescription.
If there is no improvement within a 48 hr period or there is worsening then you would need to take her to the doctor for evaluation.
He or she may do a swab and start an oral course of antibiotics.
I hope this helps