London - Joan Rivers' daughter Melissa is "keeping her fingers crossed" that her mother will make a recovery.
The 81-year-old comedienne is currently on life support after going into cardiac arrest on Thursday and the 46-year-old beauty, Joan's only child, is praying her mum's condition will improve.
Melissa and her son Cooper, 13, flew to New York as soon as they were told about Joan's health scare and she may be faced with the decision whether to switch off the machines keeping the blonde beauty alive next week if her condition doesn't improve.
A source told TMZ.com: "The family will have to decide in the next couple of days whether to keep Joan on life support. The family remains hopeful that if they do decide to turn off the machines, she will make a turn for the better and fight through it."
Melissa said in a statement on Sunday: "Thank you for your continued love and support. We are keeping our fingers crossed."
A spokesperson for Mount Sinai hospital in New York said she had no update on the 'Fashion Police' host's condition as of midday on Sunday.
Joan was placed in a medically-induced coma three days ago after she stopped breathing while undergoing a routine operation on her vocal cords at the Yorkville Endoscopy clinic.
Meanwhile, Joan appeared in "good spirits" the night before the throat surgery when she cracked jokes about death during a performance at Laurie Beechman Theatre on Wednesday night.
She told the audience: "I'm 81 - I could go at any moment. I could fall over right here and you all could say, 'I was there!' " - BANG Showbiz and IOL