May I now interpolate my much delayed question? After the rigours and obscurities of the past couple of days this one is dead easy; it should take most people about 10 seconds but longer to google all the subsidiary details.
This female composer is well known despite having a very small output. She was a complete slapper and pathological liar. Prior to her marriage she had a string of passionate but apparently unconsummated relationships with a number of men, all much older than herself. The last of these was her teacher, a well known composer who later married the sister of an even better known composer.
After marriage our composer made up for lost time and threw herself at any passing expressionist painter, architect, poet .... the butcher, the baker, the candlestick maker.
Her step-father was, in his day, a noted landscape painter. He later became an enthusiastic Nazi and committed suicide when the Third Reich collapsed.
Out composer's daughter had an even more complex married life. Aged 16 she married an obscure musician, mainly to escape her ghastly mother. She subsequently married a well known composer, a publisher and a reasonably well known conductor. She became a noted artist though she struggled when she went out of fashion. Possibly her best known work, for music-lovers, is a bust of a well known US conductor.
Name a many of these interesting people as you choose and also the elephant in the room.