hmm maybe yeah just give it more time or maybe she just doesn't like it lol
does your tank have algae for her to graze on?
I myself don't have any experience with angels but I am hoping to pick up a Lemonpeel tmr at lfs
(please please please be in stock) so I've done some reading on them and apparently you're supposed to give them Spirulina? also ask your lfs
about specialized angelfish foods those should contain all or some of the vege matter your angelfish needs to stay healthy
good to hear she's doing good tho!