thanks for the quotes they are really helpful.
I have looked at descriptions from Anna Vyrubova, Sidney Gibbs, Lili Dehn and Gleb Botkin and the consensus seems to be that GD Olga was particularly quick to grasp ideas and was an intelligent kind hearted if sometimes lazy and bad tempered person.
Anna Vyrubova remembered Olga as „perhaps the cleverest of them all, her mind being so quick to grasp ideas, so absorbent of knowledge that she learned almost without application or close study.
According to Gibbes she was "hot-tempered but did not bear grudges. She had her father's heart, but lacked his consistency. Her manners were harsh. She was well-educated and mature intellectually
Gleb Botkin stated ''She (Olga) was by nature a thinker and as it later seemed to me, understood the general situation better than any member of her family, including even her parents. At least I had the impression that she had little illusions in regard to what the future held in store for them, and in consequence was often sad and worried. But there was a sweetness about her which prevented her from affecting anybody in a depressing manner, even when she herself felt depressed."
One incident where GD Olga did show fear is from Lili Dehn:
On March 13th, when the rebels from near Petersburg came to Tsarskoe Selo, she only heard several shots. When she asked Lily Dehn what the noise signified, Lily said: „Darling, I don't know - it's nothing. The hard frost makes everything sound much more.“ „But are you sure, Lili?" asked anxiously the Grand Duchess. „Even Mamma seems nervous, we're so worried about her heart; she's most certainly overtiring herself - do ask her to rest.“
The most interesting quote I have found IMO is one from a letter the Tsar wrote to the Empress from Mogilev 27/04/16
'' I enclose a letter from Olga, which can you please send back to me. Poor girl, it is natural that she worries; so long has she she kept her feelings back-that she has to let them out and craves for real personal happiness which she has not had''.
This is not exhaustive of course but it only shows that GD Olga was sensitive and intelligent but also as early as 1916 unhappy and worried. For me the Soloviev testimony is of course very compelling but its not unequivocal proof and so therefore is problematic and for me the only evidence that Olga was more scared and worried by the situation than the others.
Like the 'birthday cake' incident with GD Maria which when you start digging you find there isnt one first hand testimony only 2nd and 3rd hand references to very little, Olga's pistol is a bit of a mirage.
I think that because the Gd's studiously destroyed their diaries and more personal letters we are left with very mundane, trite evidence in their own hand; went for walk, sunny weather etc. Like Margot Frank who also apparently kept a diary the merits and insights these young women did or didn't have is just something we will never know.