I had quite a few cam shows with her before she became really big, at that time she was happily married. I hope she's doing well, honestly a very sweet girl would hate to see her reduced to hooking.
She was hooking before she got into porn -since at least 2011 according to multiple escort review sites, and she didn't enter the biz until 2012. Porn stars who escort on the side are the norm, not the exception. And this has become especially true the last 4-5 years with the porn industry economic collapse. Go to escort review sites like the eroticreview and you will see all kinds of familiar starlet names on there. Pretty much the only porn girls who DON'T escort are mostly the really big elite names like Lisa Ann, Nikki Benz, etc who are big enough not to need it. But the rest? If you have $500 - $1000 you're willing to part with you can fuck almost any one of them. Pornstars charge way more money than normal escorts do because of demand - they already have a huge fanbase of guys who have fantasized about fucking them for years and want a chance to make it a reality. And they'll pay a premium for the privilege.
Siri probably quit porn for the same reason most girls have quit recently - the biz is in the shitter because of tube sites, companies are folding left and right and the pay for girls has completely dried up. There isn't much money to be made in porn these days. They can actually make substantially more money escorting, camming, and stripping than they can shooting scenes.