we had something quite similar recently with DD5.
so i started looking for conversational opportunities with DD5 on the theme of friendships - and some interesting stuff emerged: the other girls don't play anything but princess/ they spend all their time arguing about who will be the princess/ obviously that's boring/ i want to have friends, but they don't like my ideas/ i would rather be alone with my thoughts than play with them/ it's hard to please them / i prefer my Grade 5 learning buddy/ she's better to talk to.
looking at the general trend of her comments over a period of time has really helped me figure out if this is a problem for her - i think it is, but only to an extent. the issue at the heart of it has been (yet again) the struggle between her desire to blend in vs. her need to be herself.
i guess that was a long-winded way of saying that you may get more detail from your daughter in the days/weeks to come - and i'm wishing you both the very best!