The Queen would have seen them as better weapons than just lumbering around (and potential weapons are how she perceives them, judging by the way she gloated while an egg opened to out-flank Ripley/Newt).
Especially when she was preoccupied with the powerloader.
They would have found Newt faster
and got on with face-latching while Ripley was stomping.
Facehuggers aren't delicate, they're resilient and tenacious things. The only time they're vulnerable is when they're in the eggs. When they're clutched onto someone, that
is their defence - nobody dares to harm it.
So, in my mind, there was
every reason one should have been running around after Newt/Ripley, if it had been carried up there outside of an egg.