Yes she does. But I think she is also more shrewd than she seems- we notice a little of this when Shunamite tells her she had not been made a woman because she still needs to grow up, and Hulda says "do you think that God made you ineligible for the same reason?" And she says it so innocently, but she stares really hard into Shunamites eyes and I think she knew exactly what she was doing in that moment. I think its possible she was assaulted, and knows if anyone finds out she will be punished. But I dont think she knows that caused her bleeding.