Engine getting hot

I've had my van listed above sitting in 1 spot for the last 3 months because I was told that the thermostat needed changed. The guy said my thermostat was the reason it was getting so hot. After spending over $200.00 I had the same outcome... Needed to list the engine to get it out. I finally had someone get a hold of me and said "since you've been doing so much for our mutual friend and helping him out, I'm going to help you out. I'll be there tomorrow." I said sure! It couldn't hurt! So today around 4:00 is when the lady mechanic showed up. In 2 hours she had the old thermostat in and the new one on and all the parts that were sitting in my backseat was put back in place! I started it and let it idle for about 2 minutes. In that short time the temperature gauge was almost at halfway. She was disappointed that the situation wasn't fixed but I still have much respect for her doing what 3 men couldn't do. The van is still getting hot, the water flow isn't working and the reservoir is not working.