Does F-1 preference change to F-3 if beneficiary marries?

[SamWan]

I am a US citizen and applied I-130 for my unmarried daughter (age over 21) under F-1 preference category. It will take a few years for her PD to get current. In the meantime if she marries will she automatically lose her F-1 preference and get relegated to F-3 which would mean a few more years of wait?

She is currently in US on H-1 visa so is it advisable to start her employment based GC also so which ever comes earlier? Will it affect her family based I-130 processing that is already in the queue?

[immihelp]

1. That is correct.
2. Yes, she can start that in parallel without affecting each other.