sick, at all. >> reporter: on monday, jemma felt better.n danced in her school's christmas play. but then three days later. >> she was pale, she had cold hands, cold feet. >> the way she spoke to us, how she was trying to say something's wrong. i could tell that she never spoke with me in that tone before. like, asking for help. >> reporter: her parents, leyla and alex, took jemma to the emergency room, just in the nick of time. she arrived and went into cardiac arrest. >> the feeling of losing your child right in front of you. >> you thought you were going to lose her? >> yes. >> yes. >> her heart wasn't doing anything? >> no. >> no. >> reporter: doctors performed cpr on jemma for 45 minutes. >> he told me that, you know, you just have to live life and you have to appreciate these 4 1/2 years that we had with her. >> doctors couldn't get jemma's heart working again. they put her on life-support and sent her in a helicopter to a transplant center, thinking she'd need a new heart. >> thursday, friday, saturday, her heart wasn't doing anythin

. >> reporter: jemma was a healthy 4-year-old little girl. now she's fighting for her life because of the flu. >> really thought it was the end. >> reporter: you thought she was not going to make it? >> no. >> no. >> reporter: sunday, december 13th, jemma had a slight fever. all. >> reporter: on monday, jemma felt better and even danced in her school's christmas play. then three days later -- >> she was pale. she had cold hands, cold feet. >> the way she spoke to us, how she was trying to say something is wrong, i could tell she never spoke with me with that tone before. it's like asking for help. >> reporter: her parents took just in the nick of time. she arrived and went into cardiac arrest. >> the feeling of losing your child right in front of you. >> reporter: you thought you were going to lose her? >> yes. >> yes. >> reporter: her heart wasn't doing anything? >> no. >> reporter: doctors performed cpr for 45 minutes. >> he told me, you know, we just have to look back, we have to appreciate these four and a half years that we had with her.

. >> reporter: her parents took jemma to the emergency room in the nick of time.to cardiac arrest. >> you thought you were going to lose her? >> yes. >> reporter: her heart wasn't doing anything? >> no. >> reporter: doctors performed cpr on jemma for 45 minutes. >> he told me, you know, we just have to look back and appreciate these 4 1/2 years that we had with her. >> reporter: doctors couldn't get jemma's heart working again. they put her on life support and sent her in a helicopter to a transplant center thinking she'd need a new heart. >> thursday, friday, saturday her heart wasn't doing anything. >> reporter: no exact teactivit? >> absolutely no activity, no pulse. >> reporter: her friends asked friends around the world to say prayers for their daughter at mass. >> at 11:00. everyone did a mass at the same time. >> yeah. >> reporter: and that's when leila and alex say they got their christmas miracle. >> she started bouncing back on sunday. >> reporter: all of a sudden on sunday, jemma's heart started to beat again. can you explain it? >> sometimes we don't u