Heya, glad you like the story and were able to identify or find things that you could pull that were applicable to your experiences. Don't worry about the donation stuff, the game is free for a reason. If you want to help out, you can always share or help spread word of the project-- that counts just as much. But no pressure. It's perfectly fine to just play it and enjoy it.
My official position on sequels right now has been that I have no plans for one. I worked hard to tie things up in a certain way at the end of this one and any sequel would potentially undo that. However, if i think of a story that's better than this one for a part 2, then I'll certainly give it a shot. i know people are interested in a sequel but i don't want to drag it out just as a money grab, ya know?