A tense win - 6-1, 7-6 - in the final qualification round against the Ukrainian Olga Savchuk earned her a precious spot in the main draw.
However, the British youngster is completely unfazed by the huge challenge that lies ahead as she faces Jankovic just five days before her 18th birthday.
"I'm happy to play anyone really," Robson said.
"Playing anyone in the main draw is going to be tough because all the girls are very experienced players."
When asked about what she had planned for her birthday, she added: "It depends if I'm still going to be here, but my main plan is not to be on a plane because that would be the biggest buzz-kill for an 18th birthday."
Robson is currently ranked 133 in the world.