Its a publicity stunt for several reasons:
A) Seb Bourdais didn't have a test with an F1 team only after winning 4 Champ Car Championships
B) All her teammates are better (Kaanan, Andretti, Franchiti [I know he moved but he still is])
C) She just won the first major car race by a female
She is not gonna do well, guarantee 2-3 seconds off pace... if she does better than that Ill go and kiss her ass (wanted to anyway

)