what does indesisiveness mean
It means nothing, because "Indisisive" isn't a word. "Indecisive", however, means unable to make a decision.
It was rumoured that Ludwig van Beethoven dated and/or slept with Johanna Reiss, a prostitute who later married Ludwig's younger brother, Caspar-Carl. It has sometimes even been suggested that Ludwig fathered his brother's son, Karl which was the reason why he was so desperate for custody after his brother's death.