Ok. There are three ways to have some protection against liability in this regard:
1) If you filed an old version of the I-134, that older version didn't have teeth, so to speak, meaning that it was a very weak document that I personally never heard of being enforced against anyone. Since the new version is from 2014 and you filed in 2010, you should be fine in that regard.
2) She files for a whole new visa either on her own or has someone else file a new I-134 for her.
3) You get traveler's and/or medical insurance for her to cover her just in case of any health issues.
I think you will be fine just because of #1 above.
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