Are you folks ready for another go?
(For reference)
A man goes up to the counter and hands the woman a book. She tells him, “That will be $7.59.” He hands her a ten, gets his change, and then walks away, leaving the book on the counter. Oddly enough, she doesn’t make any effort to call him back.
How come?
Are they at a Library?
If so was the book overdue?
Letting my inner child run loose and break things.
Is he in a library?
“I thought: opera, how hard can it be? Songs. Pretty girls dancing. Nice scenery. Lots of people handing over cash. Got to be better than the cut-throat world of yoghurt, I thought.” - Seldom Bucket
Was the man returning an overdue library book?
I suggest you make them a LITTLE bit harder, Rick 
Sheesh!
A cigar to Redwing, and a note to myself: this one isn’t as cryptic as I thought!
OK.
A woman is thought to be responsible for the deaths of two people. The victims are sisters, and there’s no question that the woman killed one of them. But the authorities do not arrest or even question her - she’s simply sent home.
How come?
Did she defend herself or one of the sisters?
Coldfire asks:
Did she defend herself or one of the sisters?
YES
Was the woman one of the two dead?
Letting my inner child run loose and break things.
Were the systers siamese twins?
Was the doctor performing surgery in the hopes of saving at least one of them, but it went wrong?
I meant, of course, was the woman a doctor doing the above
Redwing asks: Was the woman one of the two dead?
NO
aschrott asks: Were the systers siamese twins?
NO
Was the [woman a] doctor performing surgery in the hopes of saving at least one of them, but it went wrong?
NO
Bricker, come on, throw us another cannibal doctor one here.
Were the sisters twins?
Was the woman a relative?
Was the woman the sisters’ mother?
Was there an accident of some sort involved?
SwimmingRiddles asks: Bricker, come on, throw us another cannibal doctor one here.
NO 
Were the sisters twins?
UNKNOWN, NOT RELEVANT
Was the woman a relative [of the sisters]?
NO
Was the woman the sisters’ mother?
NO
Coldfire asks: Was there an accident of some sort involved?
YES
Did one of the two sisters murder the other?
Was the woman related to the two sisters?
Was a crime commited?
Did the death of one or both of the sisters have a medical cause?
Was the accident auto related?
Did the Woman cause the accident?
Were the sisters fighting?
Letting my inner child run loose and break things.
Did she defend herself?
One of the sisters?
Both of the sisters?
Was this a lesbian, incestious streetfight? And if so, you’ve been watching the naughty channels again, Bricker.