Is your novel too short?

I asked some members of the #writingcommunity what they’d like me to research for this month’s Writer’s Corner and this came up as a problem someone was struggling with. I know, I know! Most of us have the opposite problem, having to trim our verbal outpourings and kill off our darlings left, right and centre.
This particular author’s debut novel, released last year, is a quick read but a highly satisfying one and it’s done very well, thank you, including winning prizes. They’re concerned, ho...