I have to say I also feel annoyed by the tone of her voice. What bothers me is that sounds fake and try too hard with portrait herself as a lovely person.
However imho I think her English is so good! As a non-English-speaking person I understand what she says very well. Compared to Tamara Kalanic who has lived in the UK for a long time (even studied there) Annie's English way way much better. Watching a Tamara's video sometimes gives me a headache trying to understand what she says. When I put on subtitles even that came out wrong. So can't be only me.
I think she is too perfectionist with the pronunciation, wich is a good thing if you speak another language?. I wonder how many times she has to repeat herself when filming?
I also found a bit weird for Mo's birthday they celebrated with his in-law family. My first thought was that: if Annie pays for the trip, she chooses the destination
Maybe on Annie's birthday Mo will takes her to visit her parents-in-law
Sometimes I think Annie pays for a lot of things then Mo can't complain too much. Like she might pays for the food, so they eat what she chooses to buy. She might pay for the trips, then she chooses where to go. She might pay for the house deco, then all the white furniture. That's an assumption really. But it would make sense that Annie's choices are more strong.