1.How does kelda's healing work? Does it just heal wounded or can she heal people that have there maximum amount of markers on it(Dead). It realy didn't shed any light on it by the way of the card.
My interpertation of it would be not dead, but I could be wrong.
2.Also the Microcorp Agents in there special moves there is a move called sighting. Does sighting mean that you recieve an additional die along with the regular bonus die for height advantage giving you two die for height advantage?
As soon as a character has recieved their maximum amount of wound markers, they are removed from the board. Therefore it is impossible for Kelda to be adjacent to them. She's a healer not a reincarnator.
You are correct about the sighting power. If the agents get height they receive a die for the elevation and a second die for the sighting power.