Most Jehovah's Witnesses are good and kind people. And as a result (as she genuinely believes that she is trying to help you) her motives should be seen as coming from an honest place. However, Jehovah's Witness are also strictly loyal to the Organization that directs the preaching work and as such, she will follow the instructions to terminate a 'unproductive' study. Like disfellowshipping, even this is seen as a kindness, as the shock of loosing your study is viewed as a last chance for you to change your mind, so that you recommence it with more vigor and commitment.
Sadly, under the current Governing Body, witnessing and conducting Bible studies is not about spreading Bible truths, no ... is only about conversion. And when it is not happening, Witnesses are told to move on to a more deserving souls.
Sorry.