No, not Nigel. What I said is that Hayley wouldn't even think of dragging Sarah into their problems and has no plans to use her budding friendship with her to her advantage. To her, Sarah was an innocent person and a new friend, killer brother notwithstanding. The way Nigel phrased it made Hayley think that he's only keeping her around for Sarah's convenience, whereby she would then be killed once he gets his orders or when he no longer sees her as a suitable friend for Sarah by his standards. She isn't as angry as she sounds, given that she has no ill plans for Sarah and does genuinely like her. She was actually impressed that Nigel could say that with a straight face and she respects his honesty. :)

Also, I may notice his near slip-up, but I wasn't quite sure. XD