She unbuttoned the shirt and tugged it open by its sleeves. She saw that it was rather long and wrapped it around their bodies tightly.
Now that they were tied together, the waves would not separate them.
She changed their positions with some difficulties, wrapping her arms around him and leaning her head against his shoulder in an attempt to rest.
She was truly exhausted.
Her stamina was fully expended and she could not keep her eyes open any further.
However, she could not afford to sleep!
Bai Qinghao was already unconscious. Although he was leaning against the first-aid kit and it was unlikely for him to slide into the water, there was a possibility that he would move in his sleep.
If she fell asleep and failed to notice this, the first aid kit would move above his head and cause him to drown.
She herself also faced the risk of drowning in her sleep.