It is actually protective for children to have more than one trusted adult. Sometimes kids worry about disappointing their parents, getting someone in trouble, or changing how they are seen at home. That does not mean they are hiding something in a negative way. It means they are navigating complex emotions.
You can normalize this by talking openly about options. You might say, “If there was ever something you didn’t want to come to me about right away, who are some other adults you trust?” This could be a teacher, counselor, nurse, coach, extended family member, or another caregiver. Having that conversation before anything happens makes disclosure more likely later.