Don't worry what others say. You did the best you could and obviously didn't do it on purpose and it was a rare occurance. Years ago when I worked at a stable and did evening chores I could always tell when the owners didn't do morning feedings. Did I like it? NO but you can't control everything and I made sure the horses got great care when I could. There are alot of people starving and neglecting there animals for way longer than 1 day.
What she said... I was in your shoes once.
"Be a best friend, tell the truth, and overuse I love you
Go to work, do your best, don't outsmart your common sense
Never let your prayin knees get lazy
And love like crazy"