B2 Stay Duration question

[rv_ma]

My mother in law got a 10 year visa and she entered US via Newark. At the port of entry on her I-94, there is no date or duration given instead in the line that reads class/util it is written as B2. Does this mean she get to stay 6months? Any calrification will be greatly appreciated

--RV

 

[GotPR?]

Take I-94 to CBP at the airport she entered and let them correct it.

 

[rocky7]

It is 6 months. Officers sometime do not put date.