Visa application: spouse traveling "on my passport"?

Hello!

My fiance and I are getting married in August and we are leaving in september for Scotland (I am attending grad school).  We are stressed about getting her passport updated with her new name before then being able to apply for the visa.  I noticed an interesting thing on the Visa application:

Is your spouse travelling with you?
Yes, on my passport
Yes, on his/her own passport

I am unable to find anywhere on the internet the requirements/benefits of having my spouse travel on my passport.  For me it would mean that we don't need to update her passport before applying for a visa!

Does anyone have an information on this?

Thanks for any help!
Ryan

Your parnter will need her own passport, though it doesn't matter if it and the visa are issued in her maiden name.

Vicky

How can you travel on someone else's passport 

In some countries women just get added to their husband's passports, in the same way children used to be added to parent's passports in the UK.

Vicky

DH and I got married beginning of October.  We were able to hand in person  our wedding licence and obtain  3 certified copies of our marriage certificage in about 10 minutes (but this was in Iowa)  I wanted  extra copies because I knew I would need them for my spousal visa and changing my passport.  The day after I got my marriage licence  I paid $100 to have my passport expediated back to me within a week with a new issued one with my new name.  You don't have to but I only had about 3 years left on mine and wanted to go ahead and update it.  Got my licence back in a week, drove to Chicago and got my spousal visa in 4 hours.  I was ready to fly out the  beginning of November.  So it can be done in a month's time!