Here's why:
* "Seemed" is the action word that describes what She was doing.
* "Happy" is an adjective describing her state.
* "To see us" is an infinitive phrase acting as an adverb, modifying the verb "seemed".
Here's why:
* "Seemed" is the action word that describes what She was doing.
* "Happy" is an adjective describing her state.
* "To see us" is an infinitive phrase acting as an adverb, modifying the verb "seemed".