Question

She is too lazy to write(remove too)

Answer 1

She is so lazy that she cannot write

Answer 2

Here is your answer:

She is so lazy that she can't write.

The 'too+adjective+to' structure is used to say that something or someone is more than good, necessary, possible, etc. In simple words, 'too+adjective+to' structure is used to mean the negative sense of the given sentence. For example the meaning of the sentence ' She is too lazy to write.' is 'She is so lazy that she can't write.'