My sister has just been diagnosed with true histiocytic lymphoma with brain metastasis AND rahbdoid RCC with 40 metastatic nodules in both lungs AND Pleura carcinosis

Heeeeeeeeeelp

Brain metastasis is not resectable (deeply in right thalamus). She underwent Cyberknife

Pulmonary metastases are not resectable (docs said they are too many and that the pleura is also a big problem. they tried to operate but it's impossible)

She's only 42. Any treatment?