wake right up. >> and i'll feel better? >> yep. love you lindsay lou. >> my emotions are shot, i have no more tears left. >> as nurses watch over sierra, and the doctors prepare lindsay for transplant, jason and stacy are asked to pack up lindsay's room to make it available for another sick child. >> every time we look around, we can see the love of other people, like the big heart that the whole school signed and sent to her. >> the donor heart is being removed in a hospital in nevada. transplant surgeon olaf reinh t reinharts is watching the clock. >> from the time the heart gets taken out until the time it gets profused with blood again. >> in lindsay. >> it has to be kept as short as possible. >> what are you talking? five hours? >> we're talking a maximum of six hours. i'd rather keep it shorter than that. >> a team has gone to the hospital where the donor is, to retrieve the heart.