What a little beauty! Almost certainly wild-caught. Juveniles do well on button quail eggs, adults on coturnix, though the people I know with egg-eaters say the males do fine on button quail eggs and never need to be bumped up to coturnix. It's hard to say why your snake hasn't eaten yet - maybe adjustment stress, maybe a timing thing, maybe the eggs aren't fresh enough.
In the wild they tend to chow down on a nest full of eggs and then fast for long periods of time - one keeper I know feeds hers 4-5 eggs once a month. Also, if they feel the eggs aren't fresh enough they won't eat them. Quail eggs are traditionally not washed or refrigerated. If washed, they'll go bad in 5-7 days, and the snake would certainly detect this. If unwashed they last much longer. So optimally you'll be offering fresh, unwashed eggs. Sometimes you can find folks via local Craigslist to supply them.
Good luck! I'm glad you took this cutie in and I hope it decides to eat for you.