My story can be found on the blog linked above. My blog includes both my personal story and visa-related events along with information on this whole CR-1 process. Please check it out, it might help you :)For my complete timeline as well as important links, just look above under 'About Me'!
Congrats. I believe ELIS is the online system you use to pay the immigrant fee. Just have her follow the instructions that came with the visa on how to pay. There's also information online at USCIS's website on how to pay.