The jab will make her womb contract and she may expel some more afterbirth later, the abs and the inflam will kick in soon, she's probably a bit knackered after all that pushing & shoving so would leave her quiet for a couple of hours, are piglets feeding? if she lets them its a good sign. if she's not happy with them encourage them into creep area where its warm and then try them on again in an hour or so when she's had time to settle. sounds like they had a good feed early on in proceedings so they've had her first milk which is the important stuff.
Later on encourage her up for a walk out which encourage her to have a pee/dump and then try her with a little food, make it a sloppy version of usual ration(i use dilute milk), don't try to increase it at this stage and see how she goes.
HTh
mandy