Here's how Amber looked at the end of S3 as Bray dragged her into a barn. She was aleady in labor. Note the ringlets and lack of face marking on her right cheek. And no pentacle on her right hand b.t.w.
And here she is in S4, continuing instantly on from those scenes in S3. Back to the plain Zulu knots with no ringlets, a new design on her face (both sides), plus a pentacle on her right hand.