Christina Rossetti wrote about 135 poems, but only about 29 were published
I sentence that contains an element of bias could be one that states an opinion. For example, "I think her shoes are ugly, mine are better." the person talking is biased because they really like their shoes.
"A Wedding Gift" is best considered a tragedy. Due to the sadness of it being placed around from a court case in the 1840s.
There is more than one conjunction in the sentence, the word but acts as a coordinating conjunction. Also the words not only and but also act as a correlative conjunction.