What the eminent Mr. Lebrecht does not know about modern music is not worth knowing
Were that to be true (which fortunately it is anything but), a most appallingly enormous amount of information would be "not worth knowing"!
Several composer fathers have had composer sons; not so many composer fathers have had composer daughters. Bach the master had at least three composer sons, and a good many daughters, but I have never heard that any of the latter turned into composeresses. Does any one know?
Whilst I cannot immediately think of such cases, what of composer mothers having composer daughters, such as Maconchy and Lefanu, for example? I(ncidentally, the term "composeress" may once have possessed a passing whiff of aumsement to some (in the particular context to which
http://www.webrarian.co.uk/reed/emily_butter.html refers), but it was surely never intended to be lifted from this very much of its time piece and employed elsewhere as you do now as though it had a legitimacy independent of that particular creation of long ago?