Family-based I-485 filing question for Expired BCC Visa

[JBird2001]

My fiancee is from Tijuana, Mexico and she has two children aged 11 and 14. They all have BCC laser visas, which allow multiple crossings into the US. I live in San Diego, 25 miles from the border.

Here's my concern: her 14-yr old daughter will turn 15 on Jan 8, 2008, at which her BCC visa expires.

If my fiancee and I get married after her birthday, and I file for the family-based adjustment of status I-485 after the expiration date of her daughter's visa, will that affect our application process? In other words, do all their BCC visas need to be current in order for their applications to be approved? Will the daughter's visa need to be renewed before we can move forward?

Thank you in advance for your valuable advice and input!

[JBird2001]

I should have also mentioned that I am a US Citizen. One very important detail to leave out!~