When Ainsley made her first move, she even silently walked to a blind spot of the Dryad woman's monitoring and only then did she show off her ability.
This Dryad woman was definitely a powerful ability user, but she also didn't cover the entire venue with her plants because it took too much energy.
The girl just kept some plants around the boy to monitor him and locate his real coordination, but Ainsley was also clever.
She moved fast to the blind spot back then and when the Dryad woman moved her plants to see what Ainsley was doing, the baby had already sent out all the ten daggers.
Then, the baby returned to the previous location while silently controlling the ten daggers with her mind alone, not using any gestures to help lessen the burden on the mind.