It seems Ben Affleck's Live By Night co-star Sienna Miller wanted in on Affleck's upcoming Batman film but apparently received word back from Affleck that Selina Kyle is not in his script.
Previously, actress Teresa Palmer, who was set to play Talia Al Ghul in George Miller's defunct Justice League Mortal film, expressed an interest in playing Talia in the DCEU but there are reportedly no plans to introduce her either (or her father Ra's) in Affleck's Batman movie.
Admittedly, not much is known about Affleck's plans for his standalone Batman film other than the fact that it will feature Jeremy Irons as Alfred, Joe Manganiello as Deathstroke and J.K. Simmons as Commissioner Gordon. It is tentatively titled The Batman and is expected to begin filming Spring/Summer 2017.