i seriously doubt this is a bug bite.
much more likely IMO to be dacryocystitis:
http://www.stlukeseye.com/Conditions/Dacryocystitis.asp
really, really common in infants, especially young infants like your 8 week old. usually no big deal. usually does not require aggressive therapy...massage and antibiotic eyedrops usually do the trick. babies usually grow out of this. but if they dont, sometimes an ophthalmologist will recommend an in-office minor surgical procedure to kind of permanently fix the problem.
Went tro the URL provided by you, but her condition is totally different, sorry if I have nor described the symptom well.
The swelling is at the lower eyelid, below the eye towards the outer corner, not at the corner. When it swells it looks as though her lower eyelid is merged with the cheek.There is no ***** point or infection site.
Swelling goes away and comes back once ow twice the same day.
Pls reply.
Thnx