What two matters happened to her?
Rashi: Her afflictions were doubled - two at a time. Malbim - "ha'Shod veha'Shever" came together, and then "ha'Ra'av veha'Cherev."
Radak: When you were in your land, about to be exiled - "ha'Shod veha'Shever" (refer to 51:19:2:1).
What are "ha'Shod veha'Shever"?
Radak: Shod is the sword, and Shever is hunger. These were in addition to the evils of Galus that you suffered for many years.
Malbim: Shod was external, someone came to plunder your money. Shever was internal; the affliction was from inside and outside. Afterwards came the sword and hunger - also these were inside (hunger) and outside (the sword) - "Im Yatzasi ha'Sadeh v'Hinei Chalelei Cherev v'Im Basi ha'Ir v'Hinei Tachalu'ei Ra'av" (Yirmeyah 14:18).
Why does He ask who will console you?
Rashi: Who can I bring to console you, and say that also nation Ploni was stricken like you?
Radak, Malbim: Which nation was stricken like you, with which I can console you [that you are not alone]?