She attended Dame Alice Owen's School in Potters Bar, Hertfordshire and has 3 sisters, Jessica, Olivia and Bethany and a twin brother Luke.

After a disappointing first year at the British Espoir Championships (2009) she changed clubs and began training at the Sapphire School of Gymnastics Limited.

Gabby was part of the British Junior team at the 2012 European Women's Artistic Gymnastics Championships in Brussels, Belgium that came 4th.

[8] She also won the British titles on Floor and Balance Beam, as well as a Silver on Uneven Bars behind 2008 Olympian, Becky Downie.

She was chosen to join the team travelling to compete at the World Championships in Nanning, China with Becky Downie, Hannah Whelan, Claudia Fragapane, Ruby Harrold, Kelly Simm and Charlie Fellows.

Jupp was set to compete at the English Championships in March 2015 but unfortunately suffered another tear to her ACL in her right leg meaning she spent the rest of the year in recovery of her injuries.