Hi. My Daughter Is 14 And Has An Inoperable Tumor

Hi. My daughter is 14 and has an inoperable tumor on her optic pathway, pituitary, and hypothalamus gland. She is blind from this tumor, diagnosed before she was a year old. Tonight she is crying and complaining of eye pain, that feels like someone is spraying cold water or mint into her eyes. Any idea what can cause this?