Don't worry, Wox, I can assure you that English is a second language for quite a few on this forum, and I applaud your courage for discussing in spite of it. Very few seem to be able to do that.
one must know to pick out good collaborators.
Tatiana seems to have been heavily influenced by her mother.
For by all accounts it seems that her friends and company were all "chosen" by the Empress, if you will. Alexandra selected her children's playmates, set up the hospital where the girls worked. The only friends she "chose" were some of the soldiers who came in - Dmitri Malama, for example. Although even he had to receive approval from Alix.
From Sophia Buxhoeveden (not the most reliable source, yet nonetheless):
She was sociable, and friends would have been welcome, but no young girls were ever asked to the Palace. The Empress thought that the four sisters should be able to entertain one another. one must know to make compromise as well
All of the children could compromise, however Tatiana was more of a messenger than the one doing the actual compromising among the family, bringing suggestions from the children to their mother and letting both parties come to their own decisions. I'm sure she could compromise and likely did so on occasion, however there is nothing to suggest that she was more reasonable than any of her sisters.

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one must discuss with people
Each of the girls could carry on a conversation. Olga, Maria and Anastasia was friendly and open, speaking to whomever would listen. From Lili Dehn:
With [Tatiana], as with her mother, shyness and reserve were accounted as pride, but, once you knew her and had gained her affection, this reserve disappeared, and the real Tatiana became apparent. She was a poetical creature, always yearning for the ideal, and dreaming of great friendships which might be hers.The girls certainly leaned how to converse more easily with the people as she reached captivity, however these events would never have happened in a scenario that Tatiana became Tsaritsa.
Tatiana seemed to have little confidence in her abilities to lead. Again from Sophie, with regard to the comittees she lead:
The young Grand Duchess took the greatest interest in it and, young though she was, had quantities of papers sent her every day, which she went over with her mother's help, making notes and writing her decisions. Tatiana would have needed so much guidance that the country could not have provided. Tatiana would not only replicate the reign of her father, but it would have been riddled with the influence of her mother. It would have been an exact replica of his reign.
If we admit that Tatiana received the education Nicholas, or his brother Alexei, received that was not one to open the minds to a change in the country. The revolution would have happened, no matter what.
Exactly.
Tatiana had many redeemable qualities - she was kind, caring, an example to her sisters, her mother's pride and joy, and would have made an absolutely beautiful young lady had she been given the chance. However none of these make her an acceptable tsarina.
Sorry for posting so often, I keep thinking of new things to add.