Engine does not crank, it just makes a grinding sound?

So, I inherited the vehicle listed above, wagon from my grandma. It's 30 years old but had 45,000 on it when I got it. I have put 5,000 miles on it in the 8 months I've had it. I moved it from garage life to outside on a dirt/ gravel road. At least two years before I hit it started hesitating when she started it. You pretty much had to crank it three times almost every time it was started. Now she barely drove as you can see by the miles. So, I inherited this issue. So, it started feeling a little rougher when I was cranking it over. Probably the last week it's been a little rougher. Also, I've been having an issue with it getting hot. Not overheating but getting hot enough that I had to monitor it. I replaced the thermostat and was having to refill the antifreeze not just fill it after it was flushed. Still using more antifreeze than should. So, I was sick last week, and my roommate took the kids to school in it. When I went to use my car again it wouldn't start. Just a grinding sound as I tried to start it. Sounds like it wants to kick over but doesn't. I thought it must be the starter without checking if it was the problem first replaced it. Figured it's been giving people a hard time for about three years now. So, the car is still not starting. Making the same grinding sound but trying harder to kick over because I charged the battery all the way up first. What do you guys think? Oh, by the way I did check the oil to see if it was bad from friend driving it.