The Dutch coach of Team GB and NI picked the Scottish athlete ahead of four English alternatives despite the UK Champion failing to have the A qualifying standard.
Sharp's 'late run' saw her win the Trials in Birmingham and then surge to silver in the European Championships in Helsinki on Friday night.
As rivals Jenny Meadows and Jemma Simpson launched 'pick me' social media campaigns and vowed to launch appeals, and Marilyn Okoro tweeted about quitting, Sharp stayed diplomatic and van Commenee duly went with the form choice as her 'late run' to podium glory was replicated in the selection process.
"I feel it was a really brave decision," said Sharp, who will be joined by three other Scottish women at London 2012 in Eilidh Child, Eilish McColgan and Lee McConnell.
'To pick me they had to de-select four women who had A standards but that's what they have done. I want to thank them for having such enormous faith in me and now I am absolutely determined not to let them down.
"I called my dad (Cameron) and he was chuffed to bits for me. I've heard a lot of stories over the years about him being at the Olympics in Moscow in 1980 and now I am going as well – it is still quite hard to take in."
Glasgow's McConnell was named as expected for the 4 x 400m relay and as van Commenee's 'discretionary pick' for the 400m individual after finishing third in the trials.
"I was always confident about the relay place but was pleasantly surprised to get the individual pick," said Lee.
'To go to one Olympics is very special but with this one being in London I just didn't want to miss out on it.
"You can feel the hype building up and just to be part of that is so exciting – that's what keeps you going through winter training."
McColgan will be at London 2012 for the steeplechase at the age of just 21 while Child – the No.1 ranked 400m hurdler in Britain – believes she can make the final in her event.