Well done for persevering. You've kept her alive and that's always rewarding.
Was the mother a first-timer, or had she farrowed before?
Also, did you consider a pm on the mummified piglets? Don't want to scare you, but there are a few conditions that can cause mummies - not just PPV (parvo).
Probably too late to be raising this, but might be worth talking to your vet before the next one farrows.
All the very best
Liz