Probably more than we realize, but not enough to make anyone feel comfortable. [ Jim's caught some 'pilot' and other space-age chatter here and there, but hasn't gone out of his way to make connections over it; he's well aware by now of how weird the Federation is compared to most 'future' worlds. ]

To me it sounds like she meant both. Warning us of something coming, then saying they would try to monitor, 'however.' However what? However this, probably. Maybe something caught up with them quicker than they expected.