You have not mentioned what were the other vaccines given.
MMR is usually given sub-cutaneously and does not cause so much of local reactions.
If some other vaccine was given intra-muscularly, they can produce a swelling for few days after the shot.
Since you say its 9 days now, it has the size of a golf ball and it is hot to touch too- you must see your doctor and get abscess
Hope my answer helps you.
Wish your daughter good health.