It doesn't tell what she did to go to the Dark Forest. Sure she had kits with a cat from another clan but so did Bluestar and Silverstream and they both went to Starclan. The answer can't be that she tricked Crookedstar (Stormkit/Crookedkit/Crookedjaw)because she was already in the Dark Forest at that time and never was in Starclan. So it remains a mystery why she's in the Dark Forest.
When Mapleshade was still living, she had a forbidden relationship with a RiverClan tom (she was from ThunderClan) She ended up having the unknown tom's kits, became exiled from ThunderClan, and carried her kits to RiverClan, in hopes that they could live there. Sadly, her kits drowned while she tried to cross the river seperating the two clans. When she arrived in RiverClan, Mapleshade was blamed by her mate for the death of her kits. Now exiled from RiverClan, she was forced to become a loner, and grew a strong hatred and jealousy toward her former mate's kin with another she-cat. I don't see how that's truly evil, but she ended up in the Dark Forest. In my opinion, she became more evil after death. ❄ Blizzardpelt ❄Freezing in the Summer! 00:48, March 27, 2012 (UTC)