The analyses of a text #3

The narrator recalls his adolescence.
He took a long journey, after his young wife died of a disease.
He got a letter from his old friend Agnes.
Chapter 58 ABSENCE
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The packet was in my hand. I opened it, and read the writing of Agnes.
She was happy and useful, was prospering as she had hoped. That was all she told me of herself. The rest referred to me.
She gave me no advice; she urged no duty on me; she only told me, in her own fervent manner, what her trust in me was. She knew (she said) how such a nature as mine would turn affliction to good. She knew how trial and emotion would exalt and strengthen it. She was sure that in my every purpose I should gain a firmer and a higher tendency, through the grief I had undergone. She, who so gloried in my fame, and so looked forward to its augmentation, well knew that I would labour on. She knew that in me, sorrow could not be weakness, but must be strength. As the endurance of my childish days had done its part to make me what I was, so greater calamities would nerve me on, to be yet better than I was; and so, as they had taught me, would I teach others. She commended me to God, who had taken my innocent darling to His rest; and in her sisterly affection cherished me always, and was always at my side go where I would; proud of what I had done, but infinitely prouder yet of what I was reserved to do.
[David Copperfield by Charles Dickens]
1. I'd like to know why it is "so" before "gloried" and "looked," not "much."
2. I'd like to know why it is "so" before "greater," not "much."
3. I'd like to know "to be" indicates the intention of "calamities."
4. And I'd like to know what "side go" means.
Thank you in advance for your help.