Welcome to HealthcareMagic forum.
Yes , you need to consult your pediatrician
for a thorough assessment of your child for any nailbed infection(fungal or bacterial ) or a nutritional deficiency
Though the possibility of an infection is less likely since you mention she is a asymptomatic , it can be possible with mild fungal infections . Also the nails will grow back over time in both cases but this problem will keep recurring and might worsen with time .Hence it's important to show it to your doctor to be on the safer side.
Hope this answers your query.
Wishing you and your family good health.