Discard to heal questions

[Omnislash]

Hello everyone, the rules say you may spot a unique companion or unique ally with at least one wound and discard a card from your hand with the same card title to heal that character. Does that mean if you have a character in play with no wounds, you can or can not discard a card to "heal" that character even though under effects it says if the effect of a card requires you to perform actions you can not, you must perform as much as you can (in this case discard the card) and ignore the rest? Also, if I have 1U70 with one wound in play, can I play 1R87 to play another 1U70 from the draw deck to the discard pile and heal the one in the support area? Thank you for any help. 

[bibfortuna25]

1) Correct, you can only do that if the companion/ally has a wound on him.

2) No. You can only use AWINL to play a character from your draw deck, not for any other purpose.