1-2 weeks is probably a bit late, but there is another form of emergency contraception - the emergency IUD (coil).
This can be fitted up to 7 days after itercourse (but there are occasions when it isn't suitable, and the timing may need to be checked against predicted dates of ovulation).
The emergency IUD has the advantage that if desired it can be left in place, to provide long-term contraceptive protection (or alternatively, it can be removed after 1 month - if she doesn't want to keep it).
In any case, with any form of emergency contraception the effectiveness drops the longer you wait - The 2 main types of emergency contraceptive pill are most effective if taken within 24-48 hours, after which the reliability begins to tail off. Although, if taken within 72 hours, the expected failure rate is less than 3% (estimates vary from about 1% to 2.9%). As an aside, the emergency coil is very effective - with failure rate of about 0.1% when used correctly.