She may subpoena the video herself if she knows how to do it. If she doesn’t, she’ll need a lawyer to do it for her. If the state has the video then the video can be obtained from the prosecutor through discovery. She’ll need a lawyer’s help with that, too, if she doesn’t know how to do that. She might qualify for the appointment of a public defender if she’s indigent. Otherwise, she’ll need to find an attorney on her own to help her with this. Note that the state doesn’t need a video to win conviction on shoplifting charges. The testimony of the store employees, if believed by the jury, would be sufficient. After all, people were prosecuted and convicted of shoplifting long before video was invented. Being in police custody approximately 4 hours is not a violation of her rights and certainly isn’t something that will result in dismissal of the charges against her.