Silverstream gave Firestar the gift of loyalty because she had been torn between love of for Graystripe and loyalty to her Clan.
Silverstream gave Firestar a life because she wanted to show her support for him as the new leader of ThunderClan. She felt a strong connection to him as a former mate of Graystripe, and believed in Firestar's ability to lead the Clan. This act symbolized her trust and faith in him.
Lionheart gave Firestar his first life.
It is believed Silverstream gave Firestar a life because she was close with him and Graystripe. Firestar helped her and Graystripe many times, so maybe she wanted to repay the favor.
No, Graystripe and Silverstream are not Firestar's kits. Firestar's kits are named Leafpool and Squirrelflight. Graystripe is Firestar's close friend and Silverstream is Graystripe's mate.
Bluestar, Lionheart, Yellowfang, Runningwind, Silverstream, Swiftpaw, Redtail, Brindleface, and Spottedleaf. Lionheart gave Firestar the gift of courage. Bluestar blessed Firestar with the gifts of nobility, certainty, and faith so he could lead Thunderclan. Yellowfang gave him the gift of compassion. Runningwind gave Firestar the gift of of energy (to run) Silverstream gave him the gift of loyalty. Swiftpaw gave him the gift of mentoring. Redtail gave him justice. Brindleface gave him 'power' (like to defend his clan, fighting with claws) Spottedleaf gave him love (for Sandstorm)
Lionheart, Redtail, Silverstream, Runningwind, Brindleface, Swiftpaw, Yellowfang, Spottedleaf, Bluestar.
The faceless queen in Firestar's dream in Forest of Secrets is not Silverstream, but is meant to symbolize the figure of a mysterious queen - indicating a future threat or challenge. Silverstream is a separate character in the series.
Lionheart
Brindleface gave Firestar the gift/life of protection. For kits, the need to defend your Clanmates, the vicious protection a cat gives for their loved ones. It was unbearable to stand for Firestar.
Killed by Scourge in The Darkest HourDied in battle against rats in Firestar's QuestLost helping Ravenpaw in The Heart of a WarriorKilled by a falling tree while helping ShadowClan in DawnDied of greencough in Long ShadowsKilled by a fox shortly before The Fourth ApprenticeKilled fighting Russetfur in Fading EchoesUnknownDied from his injuries after Tigerstar wounded him in The Last Hope
Squirrelflight, Brambleclaw, Birchpaw, Graystripe, Sandstorm, Firestar, Leapordstar, Blackstar, Tigerstar Firestar,Ashfoot,Leafpool,Silverstream,Stormfur,Hollyleaf,Lionblaze,Jayfeather, Goldenflower,Clawface,Brokentail
In the Warriors series by Erin Hunter, mates are cats who have chosen each other to be partners in life. They form a deep emotional bond and usually have kits (kittens) together. Mates are an important aspect of a cat's life in the clans.
As of now, Firestar has not lost his eighth life.
Graystripe fell through ice and almost drowned but Silverstream jumped in the water and saved him.