Her comeback to the international judo circuit was no success from the start. The death of her family members and her recent injuries still had a huge impact on her performances. Also due to these happenings her coach Jan de Rooij was no longer able to give her the aggression she needed to compete. National coach Marjolein van Unen took over from De Rooij in February 2008. Since then Gravestijn achieved a total of three top 5 rankings in World Cup meetings, inclusive the second place in Budapest and the first place in Warsaw. During the 2008 European Judo Championships in Lisbon she qualified for the 2008 Summer Olympics. She lost in the second round of the tournament after a mistake made by the referee, who changed the score of her match the exact other way, just 40 seconds before the end of the match. Thanks to one of her main rivals in former years Isabel Fernández who eliminated Inga Kolodziej just four seconds before the end of the game Gravenstijn qualified for the Olympics. Due to Fernandez's win Gravenstijn remained on top op Kolodziej for the Olympic rankings. One month before the start of the Olympics she was hit by a medicine ball during a training session. The ball which weights 5 kilograms landed with a high speed at her head, giving her recently recovered neck another big smack. The injury almost forced her to miss the Olympics, but Gravenstijn recovered faster than expected.