She has some mental issues, I wouldn't make fun of her. I assume she means her immune system. There's nothing wrong with listing "natural immunity" as one of your defenses, assuming she's referring to her immune system and not some innate specific defense against COVID. Your immune system does help defend you against COVID. The problem is when it's your only defense against COVID. I mean, most people have a relatively normal immune system. It sucks against getting infected with Covid, but seems pretty decent against dying from it.
Of course there is
Because everyone has freaking natural immunity.
It would be like me listing why I'm a good athlete. And then writing that I have bones blood tendons and other freaking nonsense.
I will assume that her natural immunity meant that she previously had gotten covid, thus has natural immunity to it. Nothing else would make sense (not that it does to begin with) rather than referring to her innate non specific immune systems, which again is just a stupid point.
Regardless she's obviously a freaking psychopath. I suppose we'd be better off if we had more retards like her rather than the fat slobs who are the reason this excrement still exists