When you file for N-400 under 5 year rule (General provision) you just have to list addresses in the last 5 years. You don't have to provide any evidence of that. If all the moves were in the US and she didn't live outside the US, it's super easy. For evidence, she'd only have to provide 5 years of tax return transcripts, marriage certificate and and certificates of children born in this marriage.
With 3 year rule filing, she has to prove bonafide marriage and many other things like financial comingling.
3 year rule interview may require US citizen spouse to be interviewed. For 5 year rule, it's not the case.
In general, less evidence is needed for general provision.