Hi! You can see from my signature that we have a baby girl (3 months) named Inés, so obviously I love it.
Dindlee is correct that in the US they will ignore any accent marks you put on official documents. Informally, I generally try to spell Inés with the accent because we are using the Spanish pronunciation. I am American, and it never occurred to me that I would be disrespecting my family or culture by spelling it in Spanish the proper way. (My husband is South American). I was also a Spanish teacher, so it would bug me to not use the accent mark as much as possible.
For middles, I don't love Inés Anneliese because they both end in the same sound, but it's not a bad combination. And Anneliese is pretty and you have the familial connections with the name, so I think you should keep it on your list as a possibility. Someone above suggested the middle name we chose - Magdalena. Other middles we seriously considered were:
Inés Beatriz (but we nixed that because of the /s/ ending on both)
I also like:
Inés Margarita (this would work in German, right?)
Inés Louisa (this would work in German, right?)
ETA: Do you definitely want something that will work in German or are you more open than that? I just read your other thread and see there you were asking for German middles.
Aguafresca, at first I was only looking for German names but since Ines honors both my Portuguese and his German roots I'm open to other possibilities. However I'd like it to be 3 syllables because I do like the 2-3-2 flow and also I'd like the name to be easily translated into both languages if possible. Hubby likes Alexandra which isn't too bad, plus it's easily translated into Portuguese [AL-SHUN-DRA]. What are some other 3 syllable options you think might work?
I'm Portuguese too, and Inês/Ines is lovely :) I'd say not to use Inés, because, well, that's nor Portuguese nor "American"... but the "^" might be hard to use in the US, perhaps...
I think Inês Anneliese flows well with the Portuguese pronounce!
Inês Alexandra would seem completely Portuguese to us.