I've only shot one hog that I can recall with the 7-30 that one being from a 14" TC. I have far better suited guns so seldom take it when hog hunting but this time I had been on a fallow deer hunt and meat hogs (generally under 100 pounds) were free after I took the fallow. I had both it and my iron sighted .44 magnum revolver with me but the shot offered was a bit long for iron sights so used the 7-30. It did a fine job and was a one shot kill just like the fallow. I used the now discontinued Sierra 130 SSP bullet as I most always have for the 7 TCU and 7-30 Waters.
But back to your situation, I think I'd chose a 140 grain Nosler PT. Since you'll be using a rifle you'll be able to get a bit more velocity than from a handgun and should be able to push the 140 grain PT to the velocity I was getting from the 130 Sierra in my 14" barrel with no trouble. I usually pushed it to about 2300 fps, some times a bit faster but that was an average.
It will do an excellent job on your daughter's pig for sure and should do OK on yours as long as you don't try to push it thru the shoulder or the gristle shield. If you can't take the bow hunter's favorite quartering away shot then put it in the neck just behind the ear and he will go down like lightning.