How could she possibly know anything about early years when she constantly palms her children off to anyone who'll take them? It's not like she's particularly interested in supporting Pearl through her early years either as she's just waiting for her to be old enough to do as she's told and sit still for ads. Of all the parents who would fit the role of talking about early years and issues facing parents of young children, it's certainly not the woman who doesn't raise her own kids.
I imagine Matt backs up what Devon said, he seems the type to be much more aware of Darcy's needs than Louise. Even if he only encourages it to oppose Louise, at least Darcy looks relaxed and happy with him and Devon and isn't rigidly sat in uncomfortable clothing for ads.
I don't think her and Liam will get married... the ring off is a bad sign anyway but I wouldn't be suprised if he's already sick of her rolling her eyes at him, making snarky comments and complaining about things he does only to do it herself and justify it. I don't like him purely because considering his job he should be making her more aware of why the girls shouldn't be plastered all over the internet but no matter what he doesn't deserve the toxic toad