I'm not a Meldrum defender by any means but I think it's going a bit far by critising her feelings from when Poppy was in the NICU. Just because it's not how you felt or think you'd feel, it doesn't make it wrong. She's very lucky that everything turned out fine but she will never be able to get the what ifs out of her head. Poppy wasn't kept in the NICU for no reason, it's not like Rebecca asked to have her there for content. She is allowed to still feel that pain and worry.
I've never once bought in to the stuff on here that she doesn't love her children or that she favours one over the other. Just because she doesn't mother the way you do, it doesn't make her a bad mother. Personally speaking, I feel she could definitely be a bit more safety conscious when it comes to Poppy eating alone or in the garden but all 3 girls come across as loving their mother, are clean, fed and thriving. She's daft, ignorant, lazy when it comes to her work and doesn't have a very good grip on the real world outside her villagggggge but I do not think she's a bad mother.