Hi,
I need help, I have some questions that I suspect my mother has a psychological disorder.

My mother is suffering from epilsepsy caused by brain virus 10 years ago, so since then she gets seizures at least once a month.

But her psychological behavior through out the years, are becoming uncontrollable. She used to be fine.

Now, she often threatens to kill herself, and gets excessively angry for the most ridiculous reason, such as someone in the house accidentally splattered a bit of water on the sink, she would be extremely enraged and say ridiculous things that are absolutely out of the context/jump out the window.
She does not have any friend now, since the ones that she had, she fought a lot, and everyone kinda hates her (she is 57 years old), in fact she has a problem with almost every friend, practically saying, her common sense is lost.

Like right now, she has been missing for 2 days, and she sends money from her bank account to me saying "keep the money, take care of your brother and father, i'm going away on a train, you will not be able to find me, goodbye", and says ridiculous stuff like those, JUST because yesterday my brother hurried her to go home because he could not hold his pee (he was going out with my mom.)

This doesnt happen once, or twice or 20, but it happens over and over and over and over again. Usually after 2 days she would be extremely sorry, but it happens over and over again. She is extremely extremely kind when she is kinda in her "normal" state, but when she isnt, when she has no common sense, she would go crazy and do ridiculous stuff. She goes to church so often, and religious, but her commons sense she has none.

When things dont go her way/someone disagrees with her when she is not in the mood, she would throw things in public to us, and gets angry or shout in public.

I am pretty sure she has a psychological problem right? Our family has been wondering for years but we are just too "afraid" since we do not want to assume our mother is "crazy", or maybe we are in denial. My father is extremely patient.

Your help is very needed. Thank you.