Marvel Zombies - Question about the communication device

Apologies in advance if this is obvious, but why was Wanda after the communication device?
Was it simply because she knew it could contact the Nova Corp and she didnt want them interfering, but didnt know about the blockade?
It seemed to me as though it was dropped as a plot point as soon as the blockade was discovered, but I cant piece together why Wanda wanted it in the first place