Wambui won the Kenyan Trials in 1:58.79, the first sub-2 or her career. Tilastapaja lists her as being unefeatd on the year in for 800.
She was the world youth champ in 2017 and won the african junior champ earlier this year.
https://www.capitalfm.co.ke/sports/2019/09/13/obiri-conseslus-lead-team-kenya-doha-squad/
https://citizentv.co.ke/sports/young-guns-earn-kenya-tickets-for-doha-worlds-276419/