My sister got diagnosed

Hi guys, today I got the news that my sister has early onset, she's only 52 and I'm devastated, and I'm still processing this, anyone know if there's any treatments in the pipeline to slow it down? I'm trying to find a clinical trial for her, I'm also wondering what it means for me? Can I get early onset Alzheimer's? How quickly do people decline from first being diagnosed? I'm trying not to freak out, my poor sister, I just can't believe this is happening, she's so brave she told me not to worry and that she's taking it day by day. Someone please reach out, I'm feeling really down.