Kirin is suffering from post-OP meltdown. It's happened with plenty of formerly top-tier leads: horus, aa luci, etc. She's generally considered to be the second-worst of the 5x leads at this point (ahead of Durga, who has yet to gain an ult evo - and from what I've been reading, Durga now has a surprising amount of use that Kirin doesn't), and has nowhere near the potential of U&Y/LKali as a leader or a sub.
Part of that is her not-that-useful active, but she also has really awful awakenings.
I hate to say it, but I think she could probably use a buff. A second ult evo would do nicely; even if it was just a buff to her awakenings it'd be really useful.