This is completely in line with the previous PSUV position. It's not even a concession. They have always maintained that they have free and fair elections. She is the rightful legal successor to Maduro, and she is promising to uphold the existing democratic norms of her country. That she isn't taking an outwardly hostile tone towards the nation which enjoys total military superiority over them during a diplomatic mission at the UN may come across as a betrayal to certain ultra-leftists in the US, but it would seem that the Chavistas in Venezuela do not share the same view.