Police were called at 8.25am on Tuesday, 10 August to reports of a collision involving two buses and three pedestrians outside Victoria Railway Station.
Emergency services attended and immediately provided first aid, but despite their efforts, Melissa was pronounced dead at the scene at 9am.
Next of kin were informed and continue to be supported by specially trained officers.
Two other people were treated for non-life threatening injuries.
All parties stopped at the scene. There have been no arrests.
A spokesperson for Melissa’s family said: “We are absolutely devastated by loss and the hole that this incident has left in our lives. Melissa was a kind and thoughtful soul, had a quirky charm with such a bright future ahead of her.
“As a family we naturally want to understand how such a tragedy occurred, but for now we just want time and space to mourn our beautiful Melissa and send her to rest with her late father.”
Detective Constable Chris May of Met’s Serious Collision Investigation Unit said: “This tragic incident claimed the life of a young woman and our thoughts are with her family at this sad time.
“We are continuing to piece together the circumstances surrounding this collision and I am very keen to hear from any witnesses who have not yet spoken with police. If you have information please don’t hesitate to get in touch.”
Anyone with information should call the Serious Collision Investigation Unit witness lines on 0208 543 5157, call 101 or tweet @MetCC quoting 1450/10AUG.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.