I read Gastone Belotti's "Chopin". It says that:
1) In 1846 Sand wrote "Lucrezia Floriani":the story is similar to Chopin's and Sand's life, but it's more exaggerated: The protagonist is not like George, but is how she had wanted to be; the antagonist is a Chopin with the negative sides enourmously amplified and the positive ones attenuated. Chopin's friends, when they read it, recognised this similarity, but Chopin didnt take care. However, Sand said it wasn't the same story. This would make us thinking she premedited the actions, but it's not true. She lost the love (not the affection) and any sort of comprehension towards Chopin.
2) Maurice began to dislike Chopin, now seen as a stranger
3) Sand and Solange knew Clesinger, the sculptor. He was said to be a vulgar man, dishonest, etc.. and Solange fell in love with him, then they wanted to marry (Clesinger knew Sand was rich and maybe for this reason he wanted to marry Solange): Solange refused to sign the "marriage" between herself and her previous "lover", de Prelaux. At first George Sand, worried about what people would have said or think about her (she was divorced, with the responsability of two sons), didn't want Solange and Clesinger to marry, but eventually she accepted, the decision of the 2 lovers prevailed to Sand's one, but <<Not a word to Chopin>> (this because Chopin form the first time was contrary to their marriage). They married the 19th of May, and went in Paris for 1 month.
4) In the meanwhile Augustine, Solange's cousin, fell in love with a painter, Rousseau, and decided to marry. But some anonymous letters Rousseaus received said that Augustine was secretly engaged with Maurice: then Rousseau broke with Sand and Augustine and didnt want to marry. We know that the letters were written and sent (directly or indirectly) by Solange and Clesinger, that hated Augustine.
5)Sand realised the true nature of Clesinger (she found out he was a liar and a dishonest): he and Solange were spending much more money than they earnt and Sand went to know the enourmous debts of Clesinger. He and Solange however didnt hear her advices. They returned to Nohant with an objective: they wanted a piece of Sand's mansion in Nohant, but she refused it. Then they wanted to open a mortgage to the house, but she again refused, Then they began to vociferate (previously only by anonymous letters, now in an opened way) that she wanted the house undivided for Maurice and his lover, Augustine. Then the 11th of July Maurice got angry with Clesinger: the sculptor wanted to break Maurice's head with a hammer; G.Sand got a punch in the stomach while Maurice, with a pistol, was trying to shoot and kill Clesinger, but he was prevented by some people. G.Sand threw out Solange and Clesinger form her house.
6)Solange, in need of a coach (G.Sand denied her Chopin's one) wrote a letter in which she says that she is ill and needs a coach, and her mother denied it. Chopin, not knowing a thing about what happened while he was away, was worried and wrote a letter to G.Sand asking the permission of use of the coach by Solange. G.Sand too worte a letter to him in which she tell a little part of the story, but Solange's letter arrived sooner (and for this reason Chopin knew only her version, that she was ill and she has argued with her mother). Then , when Sand received Chopins' letter, soon she got angry with him because she thought he "passed with the enemy side". But he didnt know anything, he only asked the permission for the coach, like he always had done before. But Sand was very angry, and in a letter to Chopin she wrote terrible words, expressing all her detestation for Solange, Clesinger, and Chopin himself.
7) Chopin astonished for that letter, wrote back saying that he was not "updated" with the situations for months. And that he never took part, neither to advantage Solange, nor to advantage Maurice. But for her, there was only 1 Truth: hers.
G.Sand replied in a glacial manner, and Chopin, for dignity, abandoned the problem because he never would have won the case.
However, G.Sand remained astonished when some of the friends she had in common with Chopin began to avoid her: Delacroix, for ex., form that moment no more has put a foot in her residence in Nohant, even after her thousands invitations.
THAT WAS THE END.
----They met only once after, when Chopin was exiting the Ville L'Eveque, while she was entering. No more.-----
Solange, after decads from the death of Chopin, still remained grateful to the composer.
Clesinger, made the famous right hand of Chopin in bronze, and the funerary monument at the grave in Pere Lachaise, Paris.