"That does seem to be quite his goal." To drive her crazy. He was a spurned lover, and no matter how sensible the reasons, Loki was being terribly childish about it. Causing her grief by refusing any form of proper communication was obvious retaliation, which in turn also caused Vision irritation due to the upset it caused Wanda. "We will likely have to enlist Thor's help." Loki still kept contact with his brother, checking on him as well while avoiding the rest of the household or approaching him when he ventured away from the Mansion. Despite his terrible prank on how he had initially and ungraciously dumped his brother on Stark's hospitality, Loki did not seem to continue his infamous ill-will toward the Thunder God.
"Also, if he is somehow responsible for her nightmares, he needs to know that cannot continue."