*SPOILERS*( im explaining to AaronEllisor1)
basicilly snowfur is bluestar's sister, they got into a fight because bluestar was complaining about thistleclaw (snowfurs mate) when snowfur finds out that bluestar is mates with oakheart who is in riverclan( the warrior code says you cant be mates with cats outside of your clan, even tho half the fandom this happens) and snowfur gets mad and runs away, onto the thuderpath (road) and gets hit by a truck, bluestar has always blamed herself for her sisters death.( and yes i typed this much for you Aaron, and you only. your welcome. see what i mean by bluestar had a rough past lol)
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