She needs to bin him. He sounds like a controlling, emotionally-abusive arsehole. I have had boyfriends like this in the past...
One bloke I was with at 17-18 (just for a few months,) and he TOLD me I could NOT play my favourite band's music in my own home. He came around to see me at my parents house and I popped my fave band's album on, and said 'TURN IT OFF!' I said 'ha ha no, it's a great album.' He stood up, towered over me and said 'OFF!' then grabbed the stylus and dragged it across the LP, causing a scratch along it. He was dumped the same day.
Another time I was with a bloke when I was about 19 (he was 23,) and I accidentally missed the bus on the way to the pub to meet him and ended up being half hour late (no mobiles then.)
I got to the pub and said I am SO sorry and that I missed my bus! He stood up (in front of 5 people we knew) 'Do not EVER fucking do that again! Making a fucking fool of me by turning up late! I'll fucking lamp you one next time, DO NOT fucking push me!' With THIS face >>>>
I walked out and got the next bus home. I was really shaken. He phoned 4 or 5 times, and kept demanding I speak to him when my mom answered the phone. He turned up at the door twice too, and the second time, my dad said he's call the police if he turned up a third time. Never saw him again.
DO NOT ignore the red flags @cofingalthetime It may sound trivial - him telling her she cannot say the word 'valid,' but it's a slippery slope.