Also her strength and durability powers are on Epic Hero scale, which obviously means that they get stronger the more is at stake (like all with great heroes). So say Starscream was trying to blow up the world, she would probably be able to stand up after he hits her full force, and if he's trying to punch an orphan at the same time she can obviously stop his fist without moving, but if a kid throws a rock at her she'll still get hurt.