i think she is actually quite good. she doesnt have the seasoned maturity in phrasing that comes only through time and experienced but she certainly has the foundation to be a decent singer.
She oversings too much. A lot of artists do this and sometimes it works out ok and other times it just sounds like a hot mess. She is sort of in between. If a song has been really well crafted with a good melody and lots of space for the words to seep through your soul , why mess it up with sometimes completly unrelated riffs that dont suit the genre of music and dont help tell the story of the song ? anyway best of luck to her. She has at least picked songs to sing that have a melody !!!!
I think its her age that is her selling point. Loved the band arrangerment though.