She will realize

My neighbor was a phenomenal support to us after the accident happened. We were having hard times with my son in the hospital. We couldn’t get everything done. It was great for us that she could bring us food like some eggs or some soup and even go around our house to water the plants.
That situation led me to think she had a big heart. It was almost a relief when she asked me for a favor, which was to watch the finals at my house. It was gratifying to reciprocate.
What happened was that the third time, I was going out of town for the weekend and she asked me to leave the key where she could find it so she could watch football at my place while I was gone. The truth is, I did not want to do it. And the more I explained this to her, the more she suggested ways she could collect and return the key.
Later it came up that we spend weekends at our beach house, and she asked me to take her son with us. I thought, wait, her sister also has a beach house. Why do I have to take her son to ours? So I asked her, “Doesn’t your sister have a place?”
When I saw her last message on Whatsapp I honestly didn’t want to answer it, to see if she figured out how inappropriate she was being. My son found her son at our door and didn’t know what to say, so I suggested he say “no” and give various excuses to eventually convince her that there are some things she just cant ask for. Every weekend it was a new excuse, like we were having the house painted, my parents in law were coming, etc., to see if she would stop asking.
Oh, and I told her that we would not pay for premium cable. The trouble is that now she wants to come over to my house to watch every movie she likes, because she says our TV is better. What can I say now? It keeps bothering me but I will avoid arguing with her, because I’d never want to create drama with her after she was so generous. Let’s see if she realizes what is happening with everything that she asks me for.
Which is better? Her constantly asking me for favors or me giving excuses and giving alternative offers so I don’t hurt her? Or is there a solution?
