Hi. Thanks for posting your concern at HCM
Boils/Furuncle at this site can be extremely painful.
If I was you treating doctor I would have put her on oral antibiotics
(penicillin group e.g Amoxycillin
in combination with Clavulanic acid
, 625 mg, thrice daily for a week).
Topical antibacterial like Mupirocin cream or fusidic acid
cream can be applied twice daily over the boil.
An OTC pain killer e.g Ibuprofen or Diclofenac can be taken orally to relieve the pain and discomfort.