I my experience, the term "miracle" is not used to describe just any unexplained or unusual phenomena or occurrance. It is only used to describe an unexplained or unusual occurrance that has a positive or happy outcome.
I'll use Pamela's example above:
Pamela discovers that her medical bills are mysteriously paid off

= miracle
Pamela discovers that her medical bills are mysteriously increasing

= mistake
No one refers to an unexplained tragedy or disaster as a miracle. Miracles are associated with feelings of joy arising out of unexplained events that people assign to the glorious power of god. It is a way in which they reinforce their belief in the supernatural.
Of course, I don't believe in miracles and voted no. I live in a world of cause and effect and believe there is an explanation for everything, even if we are yet incapable of understanding the reasons.
Thus the value of scientific inquiry.