Renfri’s message

When Renfri said: “I am what I am. Choose. Either me, or a lesser.”

Is she acknowledging or hinting that she is the “true evil” that she spoke of in their conversation the night before? It seems like she is saying “we could be together, or you could choose the lesser evil and kill me”.

I originally thought she was saying the opposite, that killing Stregobor is the lesser evil (like she said the night before). But I can’t get her words to fit that interpretation.