Tara wants the Vice President of the Gingerbread Factory to know about the sudden resignation of one of her co-workers but she suspects that it will

Tara wants the Vice President of the Gingerbread Factory to know about the sudden resignation of one of her co-workers but she suspects that it will take several days for that news to travel through the formal channels. Tara mentions the news to her office manager in passing, knowing that the office manager has lunch with the VP's administrative assistant every day. Tara is assuming which communication method will get that message up to the VP?