Semus' comment about fighting back stung a bit, and reminded Parvati of the fact that she hadn't really done any fighting back. Not like he had, at least. She considered asking him about that, but was distracted by his next comment, and turned to face him fully.
"Wait, what? That's not good... he's on the IS. Why does he think you're worth following around? Thank goodness we didn't have anything going on last week." Parvati knew that Seamus wouldn't have put the DA at risk by doing something when he was being tailed, but she still didn't like the idea of him being followed.