As far as tenderness is concerned, one must consider that we are in the early days and years of marriage and, usually, during that period everything is flowers and roses!
In any case, I am also firmly convinced that Clara Wiek as Schumann was a great and - if I may add - beautiful woman; after all, even Brahms noticed it!
On the subject of tenderness, I propose this piece dated October 10, 1840, almost a month after their marriage
Saturday always arrives as a day particularly dear to me! It makes me think that another week of marital happiness has passed... For me, there is no week that has passed as quickly as these last four. Things must not continue like this, otherwise we will end up finding ourselves aged and grey without knowing how!
I chatter about stupid things, don't I, my dear Robert? - But if, according to our agreement, I write everything that comes to mind at the moment, then I cannot avoid nonsense; you will understand this and will not be severe in judging your wife. (...)
Since I cannot disturb you now in your study, allow me, my dear husband, to conclude this week by giving you, at least in thought, a tender kiss. Being yours makes me happier every day, and if it happens that sometimes I appear dissatisfied, it is only due to scruples that assail me - and most of the time I am unhappy with myself. I wish to be worthy of standing by your side - and I hope you will not hold this against me.
As for the great Bach, however, here is what Clara thought, which she wrote on January 21, 1841:
(...) the "historical" concerts dedicated to Bach and Handel have begun. There is nothing to say except that there were too many beautiful things. Bach's chromatic fantasy and fugue, and in the second part Handel's Variations which are of a unique beauty, while the Fantasy remains decidedly foreign to me. It is a chaos of passages that give me no musical pleasure.
The Chaconne (which properly means Chaconne?) I liked very much (...).
But according to Robert, the best moments of the evening were the Crucifixus, Resurrexit, and Sanctus from the Mass in B minor, which I also liked very much. Handel must not have been as much to his liking after Bach - Bach is too great, truly unreachable.(...)