回复：I worried that she will still have the record of arrest

No she won't, for the first time offender, they will surely dismiss the case, that means no record what so ever. My friend stored something from Walmat, got arrested, went to the court. Spent whole morning waiting in the court, 30 seconds talking to the prosecutor and case dismissed. They he went back to the police dept a few years later to check criminal record. They didn't even have his case anymore. They sign the non-criminal paperwork and he got his green card last year. So it appears a big deal to the people but it's nothing really.