I'm going to go against the grain here but I have to say I like Jen's channel and she could do very well if she does the following;
1) Leave the children out. When most people go to work, they do not bring their children. Youtubers (good ones anyway) should be able to make an income without relying on their kids.
2) Declare any ads you get. Be loyal. Don't be a fan of Tesco this week and M&S next week.
3) Use your USP (unique selling point). Jen is lucky in that she has at least 3 - she has a big family, lives in the country and is trying to lose weight. She has loads of content here: big family = organising her day, time management, budgeting, grocery hauls, etc; living in the country = farm life, growing veg, gardening;, weight loss = meal plans, exercise ideas, updates on her progress.
That's my tuppence worth.
I'm sure some of you will disagree and Jen will think I'm a troll anyway.
That's life.
Edit to add: I really hope her husband is not doing the dirt. I wouldn't wish that on anyone.