The manuscript reportedly says that Mel B looked in the mirror as she swallowed each pill, according to RadarOnline.
She returned to the set of Britain's X Factor "days after" she tried to take her own life, according to the manuscript of Brutally Honest.
Scary Spice did not reveal the details around her first suicide attempt though, which she writes happened when she was 14 years old.
Mel B recently finalised her divorce from Belafonte, though the former couple is still fighting over custody of their daughter, Madison, who is seven.
Mel B was ordered to pay Belafonte's $A470,000 legal fees after the bitter court battle, which saw abuse allegations against him dropped.
A Los Angeles judge ruled that Mel has to pay the producer half the sum within 30 days and the other half when their $10.5 million mansion is sold, according to The Sun.
The America's Got Talent judge was also ordered to pay Belafonte $A6600-a-month in child support on top of the monthly $15,000 spousal support he gets.
"I went through a long year-and-a-half, two years of almost being asked to give up the rights to my daughter, financial things. And you know what? I stuck with it," Belafonte said after the divorce was settled.
"There was nothing but lies told about me … That means, that guess what? It's settled, done."
Where to get help:
• Lifeline: 0800 543 354 (available 24/7)
• Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• Youthline: 0800 376 633
• Kidsline: 0800 543 754 (available 24/7)
• Whatsup: 0800 942 8787 (1pm to 11pm)
• Depression helpline: 0800 111 757 (available 24/7)
If it is an emergency and you feel like you or someone else is at risk, call 111.
