Yes, a vet visit is needed.

Lots of flaking can be seen in these photos, so she is not healthy.

What food is she getting? She needs a grain free food, with a protein content of about 40% while a baby.

Is she getting baths? Too many? What shampoo?
Is she having flea treatments - those topical drops? Which brand

Just thinking out loud of things which can cause or contribute to these skin issues. The skin is the largest organ of the body, so she is definitely not healthy at this time.