Truth is using a pathos and an ethos appeal. It is possible to say so, because with the pathos she is trying to get the audience attention, but, at the same time, there's an ethose because she is based on her own experiences (relating it with affairs linked to moral). It is not a logos appeal because this one refairs to logic, and, indeed, Truth was an abolitionist and tried to question the logic related to her historical context in which she not only was a coloured person, but also a woman.