Quicksand Fans

Hello, if anyone has a question about the right word in a story please feel free to post here, or private message me. Please DON'T send me a whole story to proofread. This is just that I know English is tricky thing sometimes. Here's a good example:

Their: Meaning ownership "This is their favorite spot to sink"
They're: Contraction of they are "They're sinking in quicksand."
There: Location "I thought I saw quicksand over there".

Hope I posted this in the correct place, feel free to move if needed.

They're in their home over there. you got it right what I can see.

The above is an example of how tricky English can be to understand. What I'm saying is if anyone is unsure if a word is correct feel free to private message me, but just the sentence with the word not your whole story.