There is no official information on that. Disney has never spoken of this for their own movie universe vision, and nothing is known for the outsider-written book universe. The book that features young Scar only mentions the mother by name.
Scar doesn't have a mother. Lion king Six new adventures is fan fiction. Also you have to start from somewhere in a movie and end with somewhere. Disney started with Scar and Mufasa. They ended with Kiara, Kovu, Kion, Vitani and Nuka. But technically Scar believes he wasn't liked so I'll just take a shot at regular lioness/cub thing
It's unknown about that. Mufasa and Scar's parents are unknown in the film. I created this pic of Mufasa and Scar with their parents and in my opinion that's how I created them since TLK:SNA books aren't canon. I also chosen their names. The mother's name is Zuri with a nose like Scar, golden yellow pelt (I feel it's not a male trait), green eyes, black tail tuft and dark rings on the ears. The father is called Imamu with brownish-red pelt, red eyes, brown nose like Mufasa and a reddish mane. But otherwise, as far as the film, they are unknown.