It’s very common for stuttering to come and go, especially around big transitions like starting school or stressful situations. At home slow your own speaking rate when talking with her and pause slightly before you respond. No need to ask her to repeat herself or “start over” if she gets stuck — just maintain eye contact and let her finish in her own time. It could be helpful to check in with a speech-language pathologist who has experience with childhood stuttering. Early support can really help, especially when it’s showing signs of persistence.