My Young Daughter Has A Preauricular Pit. At 9 Mos

My young daughter has a preauricular pit. At 9 mos of age, the area became very red and uncomfortably inflamed (she was grabbing at it and it was hot to the touch). I pressed the area and some goop came out. I then proceeded to express a fairly large amount of stinky yellowish gunk, after which the inflammation resolved ( in about two days). Since then, I have been expressing gunk from the pit on, at a minimum, a weekly basis. She has not had a recurrence of the inflamation/pain, but I am afraid that if I stop squeezing it out and it builds back up, then she will. The stuff nearly always tends to have a cheesy stink to it. I was considering getting her a piercing so that the "other end" could drain, but today's research turned up that this could potentially be coming from deeper inside her face than the half-inch-or-so that I was expecting. Does she need to see a doctor about this? I don't want her to have a massive scar, and regular "maintenance" seems to be preempting the development of any more infections, but both of us are tired of me pinching the side of her head all the time. Is this serious, or just a facet of her personal hygiene that she will have to learn how to deal with when she is old enough?