Co-Sponsorship for K1 in Juarez

[GabachaYucateca 0]

I'm looking over the I-134 to give to my mother since she'll be providing documentation as a co-sponsor. I know that Juarez doesn't require this form but just the documentation and that people use this form just to stay orgranized.

But the language in the form is specific to someone petitioning for another, which she isn't doing. Is that okay to still use?

And it also asks about specific contributions to the beneficiary. Could she write something along the lines of: in the event that my daughter is unable to provide for the beneficiary, I will make contributions toward the extra cost incurred by his presence in the US? is that too vague?

And what is her relationship to him: future MIL pending visa approval? mother of petitioner for the K1? the poor sap who was cajoled into being co-sponsor?