Not mentioning your name achieves nothing — except raising doubt with the interviewing officer. The officer has access to, and will likely review, the previous recent application. If you suddenly disappear from the application, the officer will assume she is trying to conceal information (which, of course, is exactly right).
And, a return ticket is not proof that she will leave the US at all. It’s only proof that a ticket was purchased. For example, many (most?) immigrant visa recipients purchase round-trip tickets when moving to the US to live — its cheaper. She will not be asked about or have a chance to to show her ticket. What the officer will be looking for is whatever aspect of her life she has that will ensure she has to leave the US and return to it — family, job, education, culture, etc.