I believe that the Chandrasekar limit applies to a star before it collapses. It's the act of compression that generates the energy to cause a star to blow. Adding more mass to a white dwarf would do nothing to cause a nova, super or otherwise.
Who is the New Scientist? The article is written for a popular audience, not for the astronomy student's peers. Has anybody seen this info published in a peer review journal? "Science" comes to mind, or even Scientific American, at least S.A. is written for a better educated popular audience.
Once she is a full professor she'll understand that reporters are very useful in keeping the grant money flowing. A typical feminist sociologist would correctly understand that this problem will keep her in grant money for 300 million years.