I'm Lucy, and I'd be happy to answer your questions today. I'm sorry to hear that this happened.
In Delaware, endangering the welfare of a child is a Class A misdemeanor. To convict you, the state has to be able to prove beyond a reasonable doubt that you "intentionally, knowingly or recklessly act[ed] in a manner likely to be injurious to the physical, mental or moral welfare of the child." You have the right to plead not guilty and request a trial in order to prove your side of the case, but that would require coming back to the U.S. for a trial. You could also ask the judge to dismiss the charges at the arraignment if your daughter was never in any actual danger. Children play on the beach. That's what they do.
Because this offense is classified as a Class A misdemeanor, you have a right to have an attorney appointed for you at no charge if you cannot afford one. This usually happens at the arraignment. You can ask the judge for a couple of minutes to talk to the lawyer once he's appointed and try to argue for dismissal at that point. If the motion to dismiss is denied, the lawyer will enter a not guilty plea on your behalf and the case will be put on the calendar for a trial or another hearing. Your lawyer can handle most of the hearings for you.
Note that if you don't go to the arraignment or don't appear at any of the hearings (personally or through a lawyer), the judge will issue a bench warrant for your address. Police will not come looking for you in Canada. But it could cause problems for you if you return to the US later.
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