It sounds like she's not trading in shares, but in some sort of high risk derivative - maybe options or CFDs (contracts for difference)*. This is totally inappropriate for someone of limited means and experience.
It might be safer to wait until the casino is built here and put your entire life savings on "red".
She needs to stop this nonsense and channel her energies into finding some small business opportunity that will give her an income.
* I can't however, square that with "you win or lose after a fixed time, in her case a ridiculous 1 minute." Perhaps she's on some extremely dodgy gambling website, gambling on very short term stock price movements?