According to https://www.lawlessfrench.com/subjunctivisor/considerer/ this should not be subjunctive.  (Strictly speaking)

I am presuming the use of subjunctive here is that the speaker is willing to allow some doubt into her suggestion ? I.e. that She accepts her opinion may not be correct, or that the point is debatable ?

Paul.

-> Please ignore this question, I can't delete it now,  I think it's actually "le meilleur roman qui" which means the subjunctive is used in this context. Does that sound like the correct answer ?