Doctors told my gf she could pass away at any moment

So my gf (19f) and I (20m) have been together for about a year.We live together with her family. She’s diagnosed with Thalassemia Alpha. This also means she’s needed a blood transfusion once a month her whole life and will continue to do so for the rest of her life. She told me before we started dating and her treatment is going fine but now her condition is getting worse she loses too much iron and her medications are not helping like they used to.(It’s also not good for her to stay on them for too long)This is also the first time she’s needed a 2nd transfusion in the same month because her doctors told her she could pass away at any moment. This was unexpected for both of us and I’m really heartbroken and distraught for her I can’t even imagine how she’s feeling. I wanna make her feel better in any way possible but I feel like this is something out of my control so I would really appreciate some advice.