The way you can tell it was a rant is because her voice was cracking and wavering

she starts it around the beginning

It's all in japanese and her own translation is very faulty so I cannot understand much
besides the word "ijiwarui" aka "bully"

It's easy to tell the whole stream is her making excuses for herself, A lot.

If you wanna give it a listen: https://www.youtube.com/watch?v=TRldyu2N-SY