Many different kinds of bacteria can be transmitted by bite wounds, and without performing a culture and sensitivity on the bacteria from the wound it is impossible to determine what kind of an impact it may have on the growth and development of the kittens. The could be completely healthy, or deformed, or worse. Only time will tell. Antibiotics can also have an adverse impact, but are completely necessary for the health of the mother, because if the mother gets worse, or doesn't recover, the kittens will of course die.
Abscesses usually require 2 weeks to heal. Swelling causes pain in abscesses so keeping the pain down to a minimum will help. The healing abscess should be much less painful after 5 days or so. Just keep pampering her, giving her the antibiotics, and soaking the paw. Once the kittens are weaned (if they are normal, hopefully) please have your cat spayed/desexed!
Will let you know how things go.