The other advice is solid, and I agree with it all as of this posting. I did want to focus on the money thing.
I think you should accept the money. Some people, particularly older generations, view money as sign of respect, and turning down is against their understanding of social protocol.
You could even use it to get her a nice gift (flowers, cards, gift basket, etc).
The Basement Brothers are a good channel. I enjoy the quality of their work and what they are aiming for with their videos.
I think I first became aware of the games on Japanese PCs when I discovered that Metal Gear 2: Solid Snake on the MSX2 was the actual Sequel to Metal Gear and not Metal Gear Snake's Revenge. And that was when I played MGS 3: Subsistence.
I didn't know Lagoon was a Y's Clone and on the X68000 originally. It does explain a lot. As a child I recognized it had some odd design choices.