If your spouse is about to apply to naturalize, that must mean she is a US permanent resident, and her I-130 petition for you is currently in the F2A category for a spouse of a permanent resident. During her naturalization process and up until she takes the oath, she remains a permanent resident and nothing will change about the petition or your immigration process during that time. When she takes the oath, she becomes a US citizen, and, if you havenu2019t become a permanent resident at that time, the petition automatically upgrades to the Immediate Relative category, which has no wait for visa numbers. If you havenu2019t become a permanent resident at that time, your spouse should inform the government that she has become a citizen and that the petition should be upgraded, so the immigration process might proceed faster.