determiner
free morpheme

teacher's

common noun
possessive noun (improperly used - should be a plural noun: teachers)
subject of sentence
teach (free morpheme) + -er (derivational affix indicating a noun) + s (inflectional affix indicating possession)
 

considered

transitive verb
con (bound inflectional affix) + sider (bound morpheme) + -ed (bound inflectional affix indicating past tense)

her

subjective pronoun
singular
free morpheme
object of the verb

extremely

intensifier
ex (bound affix) + treme (bound morpheme) + -ly ( bound derivational affix indicating an adverb)
modifies friendly

friendly

adjective (object compliment modifying her)
friend (free morpheme) + -ly (bound derivational affix indicating an adjective)

Sentence pattern IX:  NP1  + transitive verb + NP2 + Adjective (object compliment)