Bro people have access to OF creators account and DM for them. That's what agencies do. Overwhelming majority of creators in this space do it. You can tell because their activity doesn't make sense. Forgets the convo you had yesterday, talks differently than how she normally talks (like calling you "sweetheart" or "baby" but everywhere else or on other socials she calls people "bro", "gang", or "twin"), or the biggest and easiest sign is when she obviously can't be online but somehow is. Like some of these girls stream on Twitch or Youtube and you're watching a live feed of them chatting with her friends, or other dudes or playing a game of Fortnite or Apex, but is somehow chatting with you while she's in the middle of a game or no phone in hand while she's out and about.
I already knew this but one time I remember on one screen I'm seeing this one girl who I follow on OF was on a livestream with a twitch streamer eating at a big ass table with friends and chatting in a cabin in the mountains and on the other screen at the exact same time she's ACTIVELY DMing ME on OF saying she's at home in her bed playing with herself :thonk:. Another time with this other girl I follow, I'm in her discord watching her play Fortnite with people and there's a live video and audio of her playing with us and on my other screen she's actively DMing me she's trying on sexy lingerie when I'm literally watching her in her PJs talking about Pokémon cards while playing Fortnite.
If they can't afford one, they have a friend or BOYFRIEND do it for them. There's also subreddits where you can hire people to chat for you. Look up OF Chatters on reddit. She may or may not have an agency but you def weren't talking to her most of the time.