I think she's channeling Lexx.
There is so much that can be said about the mother / daughter relationship. In many ways, Carla completely infantilises her daughter. I wrote before about her GP appt where not only did Carla take her but also came in with her and then filmed it. She relies on Carla for lifts and it is really sad to see her tag along when Carla visits Lexx. They are both middle aged women and she really needs to be finding her own way in life with people her own age. She has been in more and more of Carla's content which is so lazy. Carla knows she won't refuse (unlike her son who she still shoehorns in occasionally).
Nat needs a tooth implant. When I was in my mid 30s I had an accident and lost two teeth. They were not visible unless I laughed or someone was looking at my mouth as I spoke. I had a public facing role and I can honestly say, I thought about it every time I interacted with someone new. It cost me £4k to get two done. I saved for one by selling on eBay which is how I started dabbling in reselling. I asked for cash for my birthday and Christmas. I went without. Every coffee I didn't buy went into my savings account. I put the other half on my card. Carla has a responsibility as a parent to help her (she also has terrible teeth so perhaps it's not a priority for her either). But Carla just wastes money on crap, crap food, tats, home bargains, etc. She could also give her some driving lessons which is what she needs to be more independent and perhaps get a better job.
I hate watching them. I hate seeing Nat wasting her best years. FFS who spends their birthday at the fucking zoo (a very strange choice for people who say they love animals).
Carla says that Nat is her best friend. She isn't. Best friend relationships are equal. You are her mother and need to do some bloody parenting.
I haven't had my coffee yet - can you tell!