How to counter Nilah
Let us take a look on how to beat Nilah. We will look at champions who are strong against Nilah and who are weak against Nilah. Use win rate, gold difference and creep score difference at minute 10 to find the best 
Adc champion who counters Nilah. You can already win in champion select with the right counters for Nilah. If you want to know how to counter Nilah then you need to take into account the best picks vs Nilah and the worst picks vs Nilah. This Nilah counter data is based on matches played by Pros on patch 14.23 and previous ones. It is important to see whether Pros counter picked Nilah or whether they played as Nilah.
Champions used by Pros to counter pick Nilah
Looking at the matches from Pros (see table Pros counter picked Nilah) we can see that they picked 
Kai'Sa most often to counter pick Nilah. The matchup Kai'Sa vs Nilah occured 15 times. Nilah has 6 wins and 9 losses in this matchup. Learn how to counter pick Kai'Sa to get another perspective on the data.
Lane outcome for Nilah
When looking at Nilah counters you will notice that win rates alone are not conclusional. Therefore we provide an overview (see table Lane Outcome) where you can see the lane outcome of Pros who played Nilah. The lane outcome of Nilah consists of three outcomes: Win, Loss or Draw. Let's take a look of Nilah lane and match outcome for specific matchups. Considering the lane outcome and the match outcome of a specific matchup, might enable you to find the right counter for Nilah.
Conclusion
Analyze the available data and learn how to beat Nilah. To master Nilah take also a look on Nilah builds and runes for Nilah. Good luck, Summoner!