Re: Alexandra Dulgheru!!!
I think it's a matter of personality.
There are players like Elena Bogdan who will probably never recover from a slump (which doesn't even have to be injury related), but there are also other players like Duque-Marino who after years of injuries and total irrelevance come back again to play their best career tennis.
She will always be injury-probe, I guess, but there is no reason not to see her back in the Top 100 at least.