Put one tablespoon in her waterbowl each day.
If it were me, I would mix the drinkiing water up to 50/50 or more with colloidal silver and let her have all of it she can take. Don't worry about over-doing it. We gave one our "found dogs" almost pure colloidal silver in its drinking bowl for many days in a row after it was bitten by a skunk which we feared was rabid. Lil Rascal is doing fine, btw.
Put it directly in the ear.
I agree. Better than oral for ear infections.