Temporary entry -- Canada Customs "P.I.A." stamp -- duration of visa?

[ulfuls]

A friend of mine entered the country for a stay that is intended to be about three months.  She entered with her sister, who is staying for a week and then returning to her home country.  My friend did not receive a stamp indicating the length of her visa -- the stamp says only "Canada Customs", and bears the date of entry and the letters "P.I.A./A.I.P."

How long is my friend's visa valid for?  When should she leave the country?

Many thanks.

[PMM]

Hi

A friend of mine entered the country for a stay that is intended to be about three months.  She entered with her sister, who is staying for a week and then returning to her home country.  My friend did not receive a stamp indicating the length of her visa -- the stamp says only "Canada Customs", and bears the date of entry and the letters "P.I.A./A.I.P."

How long is my friend's visa valid for?  When should she leave the country?

Many thanks.

She got 6 months.

PMM