Not yet, Rin, Sesshoumaru, and Kohaku have only gone to Hell during the manga. In the final act (japanese) they go to hell in episode 9.
Episode 80: "Sesshomaru and the Abducted Rin"
ahhh, my favorite! Inuyasha: The Final Act Episode 9!
do you know what volume it is? It is Episode 96 (from Season 4), entitled "Jaken Falls Ill."
Rin first appears in episode 35 after she finds Sesshoumaru. I don't recall all the episodes, but my favorites are episode 80 and 81 (Rin is kidnapped and Sesshoumaru saves her), episode 96 (Jaken Falls Ill. Sesshoumaru saves Rin from falling off a cliff after she tries to find a cure for the poison that the Saimyosho injected into Jaken) and 162 (my ultimate favorite where Rin is kidnapped again and Sesshoumaru is attacked by a pack of monks. He battles them and then gives Rin a second choice; whether she would like to continue following him or stay with humans). She appears in Lot's more. These are just my favorites. Oh yes, she appears in the last two episodes (166 and 167).
I think it is possible that Rin like Kohaku and Kohaku likes Rin. But I say its on a friend level because you can see that they care for each other. But I would not say love. No Kohaku dose not love but like Rin.
no the bond of love is more focused on seshomoru and rin thought kohaku and rin are good friends in the manga kohaku becomes another companion and travels with them
Not yet, Rin, Sesshoumaru, and Kohaku have only gone to Hell during the manga. In the final act (japanese) they go to hell in episode 9.
Episode 80: "Sesshomaru and the Abducted Rin"
Rin gets attacked in episode 35
no rin leaves sesshomaru in manga near the end but not in the anime
It was episode 35 that Sesshomaru saved Rin.
*Sesshomaru Episode 35
Rin's death was shown in manga chapter 604, which has not yet been animated.
Rin is in Naruto episode 119
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inuyasha the final act episode 17