Weird picture. It looks like Rondstadt is sitting, but I don’t see a chair.
Looks to me like she's 'fluffing' her dress.
I'll add a little insight into this group in the picture:
Linda wanted to go on tour but didn't have a band...she went to the LA Musical Union and selected a few guys and went on tour with them. After the tour, the guys she had hired decided to stay together and became the Eagles.(short version)
Now the (unknown/unaccomplished) Eagles moved into an apartment above then unknown Jackson Browne (who had no bathroom) and was awakened early each morning by Jackson's guitar playing and singing. They say he played the same song over and over only changing a word or a few chords here and there from time to time.
The Eagles had no experience at composing songs/music so....they just copied the style of Jackson Browne.
(And now, you know some more of the story)