The Osmond family held a funeral for Marie Osmond's 18-year-old son, Michael Blosil, on Monday, in Provo, Utah.

In attendance were Marie's brother Donny, and Michael's biological mother Marie, PEOPLE reports.

"I'd just like to say thank you to everybody. As you see I have amazing support from great men, my family, my brothers. God was very wise when he put me into a family with honorable men because they have served as examples for my children," Marie said, although she hadn't planned on speaking.

"I'm so proud of each and every one of you," she added of her children. "I'm proud of my son and I honor his birth mother who's here today, who gave me the greatest gift. Thank you for those beautiful 18 years."