First off, I thought of a very easy way to avoid this removing from the game stuff: stacking! Currently, the only

card that allows stacking on it is the original
The Shards of Narsil, and there are NO

cards that allow it. So simply stack instead of removing from the game, and then your new
Arwen's Fate will work much more smoothly.
I'll suggest rewrites as I review these to work with a stacking theme. Here goes....

•
The Choice of Lúthien (V) 
Condition • Support Area
Tale.Response: If a Man is about to be killed in a skirmish, remove an Elf from the game to prevent that and cancel the skirmish (and remove all wounds from that Man if he is Aragorn). Then remove this condition from the game.
"'But she chose mortality, and to die from the world so that she might follow him; and it is sung that they met again beyond the Sundering Seas…'"1 V 100

•
The Choice of Lúthien (V) 
Condition • Support Area
Tale.
Response: If a Man is about to be killed in a skirmish, stack an Elf here to prevent that and cancel that Man's skirmish (and remove all wounds from that Man if that Man is Aragorn or that Elf is Arwen).
"'But she chose mortality, and to die from the world so that she might follow him; and it is sung that they met again beyond the Sundering Seas…'"Rewrite on this one's a little clumsy, I admit. But since it requires essentially discarding an Elf, I think it's okay that it's repeatable. Note that I added a little bonus for discarding Arwen as well.

Beren and Lúthien (V) 
Condition • Support Area
Tale.Maneuver: Remove 2

cards in your discard pile from the game to heal Arwen or Aragorn.
Skirmish: Remove a

card in your discard pile from the game to make a minion skirmishing Arwen or Aragorn strength -1.
At the start of the regroup phase, exert Arwen and Aragorn, or remove this condition from the game.
"'Tinúviel! Tinúviel! / He called her by her elvish name; / And there she halted listening.'"3 V 9
Beren and Lúthien (V) 
Condition • Support Area
Tale.Maneuver: Stack 2

cards from your discard pile here to heal Arwen or Aragorn.
Skirmish: Stack 2

cards from your discard pile here to make a minion skirmishing Arwen or Aragorn strength -2.
At the start of the regroup phase, exert Arwen or Aragorn or discard this condition.
"'Tinúviel! Tinúviel! / He called her by her elvish name; / And there she halted listening.'"3 V 9
Much smoother rewrite in this case. Yes, there are other cards that could pull this back from discard, making it slightly less of an Aragorn/Arwen-exclusive thing, but I agree with lem0n: you shouldn't be messing with cards that are removed from the game.
Arwen's Fate (V) 
Event • Maneuver
Tale.Spot Aragorn and Arwen to choose your

or

card which has been removed from the game and shuffle it into your draw deck. Then remove this event from the game.
1 V 93
Arwen's Fate (V) 
Event • Maneuver
Tale.Spot Aragorn and Arwen to shuffle a card stacked on your

or

condition into your draw deck. You may then stack this card on a

or

condition that has a card already stacked on it.
1 V 93
Again, pretty easy to rewrite this one for stacking.

Obviously, you don't HAVE to listen to lem0n, me, or anyone else. But I think that stuff removed from the game is just that: REMOVED from the game. No more bringing it back in. I'd rather you create a new pile called "Aragorn and Arwen's Condo" and move stuff there then pull it back from being REMOVED from the game. But it's your call, of course. Just my opinion, that's all.