Rashell -- assuming the short sale package for teh second is currently with the ivnstor, no worries on needing updated items, you should be fine.
I WOULD start calling teh second lien daily at a MINIMUM and escalate your case early next week, really pushing the second lien for answers.
You also should not have any issues getting the foreclosure stopped (though it can be quite a bit of time on the phones getting to the right person).
Hang in there......you will get it done.....nice work and I hope your cleint appreciates all your efforts!!!!