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The three-time Olympian went on: 'Every single person is on this earth because of a mother. Our role as mum is never ending.
'We try so hard every single day to protect you, to comfort you, to teach you what's important, to be kind to others, to follow your dreams... and then when you leave our nest, to do your best.
Family: Posting a series of photos featuring her surviving children to Instagram, the 58-year-old shared both her her happiness and heartache
Moved: 'It was difficult to hide my sadness today... there are so many emotions... always being tugged from happiness to sadness,' she wrote. Lisa's mother is pictured second from right