I wouldn't have any problems with asking her to sign the official translated manga by either ADV or Yen Press (I'd probably pick ADV book 3 that features Sakaki on the front cover), or maybe this character CD (if I actually owned it).
Honestly, I wouldn't know what would be awkward about that, I mean the Osaka Banpaku 10th Anniversary book devotes 5 pages to show examples of AD being translated into French, English, German, Korean and 6 other languages, why would she or anyone else look down on local translations?
(only thing I'd feel embarrassed about is the idea that she might think I was asking this for my kids, instead of myself. :( Oh well, it's not like I live anywhere near LA anyway.)