Cadela In Pink?

I wonder why in the credits the name "Cadela in Pink" was used instead
of Samanta Rose, cause the character said her name at the end of her
show. Maybe there's something with the book, but is strange for people
who don't read the book. "Cadela" is a female dog in Brasil, but is
also a Brazilian slang for bitch. Cadela in Pink or Samanta Rose was played by actress Susana Alves famous in Brasil by her late character "Tiazinha".