My grandmother had breast cancer, she also got a stroke a few years back, she recovered from the cancer but it was a tough time for our family overall. I was quite young so I don’t remember everything, but you should be around for them. Like make them live the rest of their life to the fullest you know? If we spend all that time just pitying everything then regret would be inevitable. So just take care of them in more ways than one, bring them flowers, make them handmade stuff or just talk to them to keep them entertained! And it is important to not overwhelm them! Just be like you always have like Pultost mentioned. Terminal illnesses suck, I wish that everyone can live their lives without limitations but it is what it is, but do not lose hope! Let the person with the illness remain a happy and cherished person till the inevitable time comes so that they remain a warm memory for you to look back to until the end <333 (I apologize if anything I’ve said hurts anyone’s sentiments! it’s just based on my own experience that’s all!)