I have glioblastoma Am I losing my mind

I have glioblastoma have posted here before but this is kinda unrelated.Friend I had for 11 years admitted to having feelings I do to. She's leaving an abusive ex. Last text was her saying she's terrified and everyone is acting like I'm crazy for having anxiety. Every thing feels like it's spiraling wildly out of control yes victims often return to abusers but that doesn't mean I shouldnt be a little panicked when she says she's terrified. He has never been physically but that can change. Is my tumor causing some kind of psychosis? Or am I right to be nervous.