Answer:
the avoiding conflict-handling style
Explanation:
This conflict-handling style prefers to avoid conflict or negative remarks on the spur of the moment in order to avoid bigger and potentially irremediable confrontations.
This is a passive way of dealing with issues and it works for minor problems (such as a co-worker using social media too much).
However, in this case, since deadline missing seems to have become a dangerous habit for Grace, it is advisable for Louisa to use another conflict-handling style.