In every era, there are people who are head over heels in love, and Si Xiaohui exemplified that for this time. She believed everything Song Yu said, as long as she could be with Song Yu, she was willing to endure sleeping on the streets.
She was certain that as long as she was willing to suffer alongside Song Yu, he would be able to provide for her and eventually, they would have a house and money. Life was bound to get better and better.
In short, she was firmly committed to staying with Song Yu, nobody should dare try to stop her.