Glad she has seen someone but bruising and pain can occur upto 48 hours after extraction. I had a big wisdom removed and about a day and a half later woke up one morning in agony. Called the dentist the next day (as of course it started on a Sunday!) but that's all they could say, take pain killers etc. Anyway, the pain lasted 3 flipping weeks and I don't know how many extra strength Nurofen I got through! It happens when the clot doesn't form properly.
Fortunately the next one out was a piece of cake but I do feel for her. Can she take Arnica tablets as that will help with internal bruising.