CRBA when the citizen mother lived in the US only when she was a child.

[Mark88 184]

It should work out, but she needs to start NOW.

[EduardoP 5]

This case is possible but not simple, possibly the next step is for me to find a good lawyer for her, am I correct?

[Mark88 184]

For what do you want a lawyer? Either claim citizenship if your sister meets the physical presence requirements, or file I-130.

[Boiler 45,733]

You need evidence, a Lawyer can not make that up, a Lawyer may suggest ways of acquiring it.

[EduardoP 5]

And what about I-130, it is possible for her to apply by herself?

[Boiler 45,733]

5 minutes ago, EduardoP said:

And what about I-130, it is possible for her to apply by herself?

Well yes, this is a DIY site for those doing that.

[EduardoP 5]

I have great news about my sister case.
I was waiting the result to post over here.
A couple of weeks ago we found my mother passport with the date of return to Brazil, including my sister's name.
Along with the passport we found a vaccination card from my sister, when she was a little over a year old.
With some additional documents attached, it was enough proof to the my sister's children acquire their mother's nationality.
They just received the "Consular Report of Birth abroad" and the passports at home.
And I want to thank those who helped us on this forum, it was of great help to us.