dorothy ran off to the woods to have her babies, even though we made a fine deep bed for her up in the stable. she'd made a huge nest from ripped up grass. we couldnt get near the piglets for the 1st 10 days or she'd have charged us but then dorothy began bringing the babies up to the house for her feed. now we can stroke all the piglets (They are 5 weeks now) but we do make sure there is a gate/fence between us and dorothy if we pick them up, as one squeal and dorothy gets protective.
i wouldnt worry if the sow is tame.