Update: looks she's going to recover. She didn't have to seek admission into the hospital.My sister, who lives on the other side of the country from me, got both jabs a few months ago. I don't remember which brand. She just told me that she has a fairly severe case of COVID. I told her to start megadosing on vitamin C, D, and zinc and to consider taking ivermectin. I sent her a list of the doctors who will prescribe it from the Ivermectin thread in this forum. I don't know if she'll go through with it, however.
She has quite a few co-morbidities and does not live a physically active, healthy lifestyle so, if she ends up in the hospital she'll probably get put on a ventilator. We'll see how it goes.