You don't neccasaraly have to have her put down, they can expell the dead piglets themselves with the injection he has given her but she must do it quickly before they start to poision her system, your vet can do a cesarean and get the dead piglets out, there are very few good pig vets around that know what they are doing and most don't want the hassle on doing a cesarean on a sow/giltt they would rather put them down, they are to lazy and inexperienced. We had a sow a couple of years ago and she twisted her womb which is rare in pigs and therefore the piglets died inside, my vet wanted to put her down, I said could he do a cesarean he said yes but he hadn't done one since vet college, anyway he did it got the dead piglets out, I kept the sow and she went on to produce numerous litters for me, sometimes vets just want the easy way out. We now have a pig vet in the "family" so we get better service now.. Hope it goes ok...