~のではないか (might/wondering)

The sheriff beat the suspect again and again until it seemed he might die.

She was afraid he might be feeling lonely and forgotten.

She said she was worried he might fail.

She worried that he might be in an accident.

She asked me whether I might not be feeling well.

She's worried she might have failed her end-of-year exam.

Aren't pianists who play Bach becoming fewer?

I think there was probably a serious flaw in the lookout.

I'm guessing he's going to win the game.

I'm afraid I might be a burden to you.

I'm not talking about anyone in particular.

I think she might be waiting at the station around now.

I think this was probably corrected after checking the date of birth on the family register.