@Loh Jane,
Yes. I've no idea whether the statement is true, but it is a normal and acceptable sentence.
For some reason that I don't understand, abet is often used with aid, as "My egotistic niece always strikes people and I cannot understand why my father and my sister in law aid and abet her. Perhaps we are just trying to sound better educated than we really are. The way you wrote it sounds better to me.