Red flags

This time it is not just a story, I am really seeking help.

I found a good remote job opportunity and in a well known place, however, it offers me a shared accommodation. Everything was just okay till....

I get a new room mate who obviously has serious mental issue that could harm me or herself.

On her 1st day entering the room, she looked at the window and said " oh its opened that we can JUMP"

I said " JUMP" ...... and it went silent.

Inside my head i told myself okay lets see, maybe just a word or she is just depressed or lets see if this dangerous verbal behaviour would be accompained with something else..

And we were typically roommates, that we are just sharing the room, nothing more or with some small talks or such and it went fine.

BUT, yesterday, she just said another sentence that from my point of view is never normal !

In the office, me and my manager were talking and laughed about an awkward reaction at work then she entered the office and my manager wanted to give me an evaluation about it.

Then my manager told her can you go to your work place please, and were still laughing, about the situation not her !!!

And then she looked at me and said " you specially dont, i can THROUGH YOU FROM THE WINDOW" she wasnt angry, but for me thats a repetitive serious behaviour.

Later on, i went to her, asked her, is that a normal words to be said ??!

And

Her reaction was even more dangerous from my point of view,

She said whats wrong, did you get SAD from what i said, im sorry!!

In my head was like, its never about feeling SAD !!!

And i told her should i consider that a threat ?

And her reaction was even more dangerous, she said oh we are just on the second floor , even if...

And i was firm with her, then i went back to my office and told my manager, did you notice what she said !

He told me ( as same as the most of Egyptians think, that they dont take many serious things as it should) he said take it easy, of course she doesnt mean it !

I finished my work, i called my friend, told her, she had the same point of view as mine!

Then i called the HR to let him know and i called her direct manager and i explained to her the situation.

But now, should I deal with her and if not her, maybe i deal with another roommate who would have another issue !!

Is it normal to spot all such serious mental issues in such country! Or community !!!

Like, she is not the 1st person !