I accidentally lost my Mom's 7 years of data.

She was experiencing some issues with the game, so I said we could try reinstalling, as that sometimes fixes things. I wasn't aware that the data was no longer attached to her Nintendo account. So I reinstalled, and now her 7 years of data is just gone due to my mistake. I feel so bad. She loved that game so much.

I'm sure many people already know this, but please don't reinstall without making a manual backup of your data! Don't make my same mistake!