Grabher was given a wildcard for the main draw of the 2019 Ladies Linz but lost in the first round to Slovak player Viktória Kužmová, in straight sets.

[citation needed] Three weeks later, as the top seed, she would beat Aliona Bolsova and win the final of the $60k Open de San Sebastián, her third ITF Circuit title in 2022.

[citation needed] Grabher made her Grand Slam tournament debut, at the Australian Open,[4] losing to 16th seed Anett Kontaveit in the first round.

[16] Grabher reached her maiden WTA Tour final at the Morocco Open in Rabat, after a three set win over Julia Riera in the semifinals.

[23] In August, Grabher became the first Austrian to win a title at a $100k tournament, at the ITF Maspalomas in Gran Canaria, Spain, defeating Jéssica Bouzas Maneiro in the final and climbing to world No.54 as a result.

[27] Six months after having surgery on her wrist, Grabher made her comeback to competitive action at the Antalya Challenger, losing in the first round to Noma Noha Akugue in three sets.