Hi @adeljose, thank you for tagged me in this issue!
Although they are united in their creative collaboration, they have stated that they are two different individuals in terms of age. They have mentioned that one is 18 years old and the other is 14 years old. They have also stated that they are sisters. Both of them mentioned that they learned about Steemit from their older sister, @nananrazila. Therefore, I think they are likely different people.