Best friend? More like bad friend!

I have a colleague of mine that I treated her as my best friend. There was once we went to JB together and we bought a pair of spectacles. I used my credit card to pay for our spectacles first since we did not bring enough cash at the point of time. Fast forward 2 months later, I kept chasing her for my money but she would come up with shit tons of excuses. Such as she forgotten to transfer me the money and to remind her tmr to make the payment or like she would change the topic to something else when I text her. Not long ago, I posted on my ig story about her and she immediately replied me saying that why am I so childish to rant on ig story? She said that I shamed our friendship online and she was disappointed with me. Blah blah.. I deleted upon her request and she told me to keep hush about it. But like gurl, without that post, you would not even return me back my money. Then after she said she was facing some financial issue and that she need to salvage the house, so she asked me to delay the payment. The thing is that, if you have financial issue, you could just tell me instead of keeping it to yourself so I wont keep chasing after you for the payment. But all I see on her ig story, is that she went to Phuket for a vacation and spent the rest of her days chilling at the condo. I did not see her at work for so long. So how do you want me to believe that you are really cash strapped? Thank goodness after chasing her for payment for 2 months, she finally made the transaction. So much for saying that her bf gave her a 10k ring last time. But you could not even return me $100+ that you owe me. Best part of all, I got to find out that you have been speaking bad about me to others. Why would you want to do that? Disclaimer girl, everything that I had is bought with my own money. I worked hard for it and I don't depend on my dad for allowance. There are days that I do 2 jobs just to earn extra bucks for myself. So don't be a shit ass person telling other people that I'm rich so that you don't need to pay me back my money. Grr..