As it stands right now it would appear that NC and PA are going to be very close to a push. WV only has 28 delegates so even a big win there isn't going to get her much. Maybe 4 or 5 delegates? Indiana has 72 so they could have an impact but still it is unlikely to be more than 10 delegates or so.
So mathematically it is unlikely for Hillary to catch Obama. So she needs a strong narrative to carry the day. If she and Obama split the remaining states, more or less, then she won't have that.
Puerto Rico is valuable because of it's delegates but it won't help the narrative since they don't actually vote in the general election. [ Parent ]
Make a new account