Outside of the comics, her appearances include Spider-Man: The New Animated Series, The Spectacular Spider-Man, the Ultimate Spider-Man video game and Spider-Man: Shattered Dimensions.
Silver Sable was introduced in 1985’s The Amazing Spider-Man #265.
There’s not enough information yet on whether this Silver Sable movie will actually move forward or is something that’s simply being mulled over.
While there have been instances where she’s had to battle other superheroes, she’s mostly been one of Spider-Man’s allies over the years.