Torn between forgiveness and moving on

I've learned a lot from my past love experience. I met a beautiful lady in college who was going through a tough time in her relationship. She was being mistreated and lacked care from her boyfriend, who would often bring other ladies to the house and tell her to excuse herself. The guy was also unsupportive and maltreated her numerous times. I stepped in to help her, and we became friends. Eventually, we started dating, and I was deeply in love with her. I wanted to take care of her and make her happy. I even helped her get an apartment and furnished it for her,
However, out of nowhere, she told me she wasn't interested anymore. I was devastated and heartbroken. I had invested so much time, effort, and money into our relationship,
A few months later, she came back, asking for forgiveness and wanting to rekindle our relationship. But I've already moved on and sold the things I bought for her. Now, I'm torn.
Should I accept her apology and give her another chance, or should I let her go?
Or should I play along to make her realize her mistake?
i have been hurt and also feeling conflicted
But before making any decision I need some advice

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