Bringing my spouse in B1

[matpro]

I have a query regarding my wife's H4

My H1b and my wife's H4 extension is in process. My wife went to India last but one week back for an emergency with my daughter(US citizen).

Now my daughter have school on August last week, so my wife need to be back by August end.

My questions are

1) Can I apply Visitor/Tourist visa for my wife and bring her to US

2) Will there be any problem if I am applying for B1 visa while her H4 is in extension in process

3) Once my extension is approved, can I go to Mexico or Canada for H4 stamping or I need to go to India for stamping

Can you please help me in the above queries. Any other thoughts will be helpful.

[inadmissible]

That is not an appropriate use of a B visa. She risks being denied the visa - or if the visa is granted - admission