Best chance would be Ebay.
It does not appear that the Cher dolls were produced by Madame Alexander in their doll collections. Cher dolls were produced by Mego in 1976-1978, and Mattel in 2000.
1960s--Tammy, Tressy, the Littlechaps 1970s--Dusty, the Mego dolls, Tuesday Taylor, Darci 1980s--Jem, Maxie 1990s--Happy to be Me, Gene 2000s--Bratz, Moxie, Liv, Tyler
Editions Mego was created in 2006.
Mego - label - ended in 2005.
Mego - label - was created in 1994.
Megan Abubo goes by Mego, Bubo, and Mego.
on google.
shas mego
One can find more information about rubber dolls by going to the Collect Dolls website. The website has information on many dolls, including a variety of rubber dolls.
Conmigo means with me.
Probably a small plastic child's toy.
If you are talking about the dolls from the book The Doll People, no, they are not made, but there are substitute dolls that you can find that look somewhat like them. You can find them at Miniatures.com.