Can shoplifters get a criminal conviction too if they are banned fr

My friend recently was caught shoplifting an item of cosmetics worth approx. £5 in boots store… she saw the security man on the gate so she quietly put the item back. But they banned her from that particular store. she has for sure done it for the first time. she lives with her uncle’s family on student visa and so scared to tell anyone about it as they might not be the same with her. Her family usually takes her to that store and she does not want to tell them about it too. She was very ashamed of her act and decided to take my help. I myself do not have much information about it. Can somebody please tell me that will she be criminally convicted for this act. They just took her house address and took her signature on the banning letter. she is also worried as she is on a student visa, that might be a problem for her in future to find a job. Please she needs help at the moment as she is a changed person now. I will really appreciate anyone can help her out here.