Pros: I think her lessons are helpful for the beginners. Her pronunciation is clearly an Asian accent and that's a plus for Vietnamese people to learn.
Cons: She is a little "điệu" quá

. The video is too long for one topic (In my opinion, one topic should take only less than 3 minutes - instead of 6 - 7 minutes).
In short, you like musics and are interested in learning English (for beginners) then you'll find her lessons useful.