There was an extremely slender Miss Pitt, I think it was in the 18th century and in England, who was known as The Bottomless Pitt.

What I'd like returned is the correct distinction between "may" and "might" - "may" is increasingly used for both senses.

If you say "a car may have killed her", you're suggesting that this is a possibility, and fairly likely. But if you say "If she had been crossing the motorway at the time, a car *might* have killed her", the suggestion is that it could have happened but it's a fairly remote possibility, since she actually wasn't crossing any motorway.