This is the 11699th most frequent Russian word.
забралась
"Забралась" means "climbed" or "got into" in English.
The word 'забралась' in this context is used to mean someone physically climbed up to an elevated place.
Она забралась на крышу, чтобы увидеть закат.
She climbed onto the roof to see the sunset.
Here 'забралась' describes the action of something moving to a confined or awkwardly accessible location.
Бумажка забралась под диван, и я не могу её достать.
The piece of paper got under the sofa, and I can't reach it.
In this sentence, 'забралась' metaphorically conveys the act of immersing or involving oneself deeply in a complex situation or matter.