The total amount of amox given to the child 6 hours apart wont amount to toxicity. The frequency of dosing
of amox is 8th hourly and not 12th hourly so kindly recheck with your doctor the prescription given.
If she is inconsolable, it probably is due to some other cause. She was probably averse to taking the medication in the first place and children around one year are aware of such happenings. Hopefully she would settle down.