^
speaking as a no-native english speaker, I'd say that it's way more easiear to write on informal english than formal one. And by informal english I mean: hi guyz how are u? I luv u 2 and so on
.
I think it's understandable if you're not living in a english speaker country, like Ayu. But I remember a short interview when she was with Leslie Kee, and she replied in english. She sounded quite good and capable of answering correctly.
I think she's good at speaking but not at writing.
I mean, look at her english tweets
they could come from a 15 years old girl not from a 33 years old woman.
Maybe with Mannie she will learn how to write properly now.