This was an old book that I read around 1987-88. I remember it being beautifully descriptive, concerning the dolls, which came to life and spoke to one another when the girl was away, and their house and dresses. I think I remember the descriptions depicting debutante style dress, with parasols and the like. There may have been conflict regarding a less auspicious doll joining the house. This story does not match up with anything I have yet looked up, though The Best-Loved Doll did come close to ringing a bell.
Stump the Bookseller
New format, same book stumper solving.
Have you ruled out The Dolls’ House by Rumer Godden?
Rumer Godden wrote several books where dolls, often in dollhouses, had lives of their own. I suggest a Google search “rumer godden doll books” and then checking Goodreads to see whether any of the synopses trigger your memory.
I would investigate the Five Dolls series by Helen Clare, if you haven’t already.
I also thought first of Rumer Godden’s ‘The Dolls House’. Another possibility might be Frances Hodgson Burnett’s ‘Racketty Packetty House’ https://www.gutenberg.org/files/8574/8574-h/8574-h.htm
Have you looked at When the Dolls Woke
by Marjorie Filley Stover?
If you’re still stymied, consider Racketty Packetty House by Frances Hodgson Burnett.