my friend has breast cancer

My friend recently got diagnosed with breast cancer. She had a double mastectomy and is currently going through chemo treatments. 

She has not worked since September, but receives disability pay through her job. Her sister made her a go-fund me page which raised over $3,000 for her medical bills and traveling to and from the hospital for treatments. She found out she wouldn't be able to have children so I reached out to my aunt who works at a fertility clinic in Philadelphia (which is about 3 hours away). She wanted to get her eggs frozen so I set her up with my aunt who helped her financially covering the expenses. The clinic took off $5000 from her total expense but she needed to pay upfront $250 for anesthesia costs so I raised the money for her plus some and paid the fee and gave her the extra money in a gift card to buy groceries. 

Meanwhile, another friend of hers set up a fundraiser which raised about $1800 and I'm pretty positive she just gave her the cash.  Now I see my friend out shopping all the time and going to the casino  and is now talking about buying a new car etc. and I'm PISSED!!!! I've never even received a thank you card or anything from her. I drove her 3 hours to appointments and didn't want any gas money for it because she is my friend and all I wanted to do was help but I feel like I at least deserve a simple thank you. I just feel like a terrible person for thinking this way. 

Thoughts?? Am I overreacting?? I'm just sad and it seems like she is taking advantage of those trying to help with medical expenses.