The last 2 winters were rough on the azaleas like the pinkster. Look for signs of life from the soil. The roots may have survived the winter and will be trying to send up new growth. If it does, it will regrow from the roots. Otherwise, you’ll need to search the internet for a replacement. We have never seen it available from any of the nurseries who supply us, Pinkster are a cousin of the Exbury Azaleas which we do stock so that may be a possible replacement.