Linda Bennett - further DOB proof needed

I am trying to correct the birth date of Linda Bennett (I), the child actress Linda Bennett - IMDb

She currently has the same date listed as Linda Bennett (III), the contemporaneous singer who also acted https://www.imdb.com/name/nm10293198/

The only evidence I can find that she was born on 12th December 1946, and not 19th June 1942 are these:

https://sortedbyname.com/letter_c/capasso/index_10.html

https://www.archives.com/search/vital/results?FirstName=LINDA%20L&LastName=CAPASSO&Location=US&Country=United%20States&cert=False&RecordSearchType=Unknown

https://www.filmboards.com/t/Linda-Bennett/is-LInda-Bennett-alive%3F-2177545/

These have all been rejected.
Does anyone have access to a better source please, like a more full birth record or something similar?