You got 3 lasses straining your guts and you are thinking of more?? You'll have a bellyache that will last for hours. What are you? crazy?

But she looks so tempting bent over like that. Besides, her ass must be getting cold, exposed to breezes like that. You would be doing her a favor getting it covered inside you.
If you are willing to make suggestions like that, you are just looking for an excuse for what you are going to do anyway, so...

You reach down and grab Franky's ankles and pull. She falls facedown onto the bed, naturally a bit stunned, and you cram her tasty feet into your mouth.

"What are you doi...?" Franky protests as she tries to turn around and look over her shoulder. Then it's "Oh. ... Oh well." and her hands get under her skirt and start rubbing.

Her too? You were told that this house was full of dominating women. But here you eat 2 of them, in a row yet, and they sit there like proper food and don't even try to give you backtalk. Was the information all wrong?

Of course, almost nobody is dominating all the time. So maybe by selecting women who like to push you around the rest of the time, they selected women who are pushovers when it becomes time to dine.
Or maybe she belongs to the "when rape is unavoidable, relax and enjoy it" school. She could see you were not going to stop just because she told you. And just how was she going to get out of your maw? So she might as well make the best of being eaten.

You are fine with it either way. The girl who kicks and fights can be a lot of fun, but with your stomach already making protests, you prefer a quiet meal. So whatever her reasons, you will agree with them.

As you start up her limbs, you can see Franky is getting hot fast. In fact, you are only halfway up her thighs before she is screaming for a quite different reason than you had earlier worried about.
As you reach the top of her legs, her hands withdraw and you decide to replace them with your tongue. Her hole has a delightful cream to it, and as you lap it up, you start working on showing Franky that a man can set her off even better than she can herself. Your tongue goes in and around and... To her considerable satisfaction. And then to another explosive orgasm. She can try to insist her own was better if she wants, but she can't deny that was very good and she enjoyed every bit of it.

As you lick her clean again, her hands return. Looking up, you see she has taken off her blazer. Very nice of her. While clothing won't stop you, it often spoils the taste. So you are pleased to have it out of your way. Of course, she likely deemed it too nice to be ruined in your belly.

Whatever. Neither of you want her dress, short as it may be, in your belly either, so she holds it away from her as you start swallowing her hips. Then her hands get to work on her 3rd time.
With the dress blocking most of your view, Franky is a roll of meat in a dark tunnel. You just keep on swallowing until her boobs touch your lower lip. A little pause for a little licking, which sets off her 3rd cumming, a rather quiet one. Possibly she is getting exhausted, tho she starts work on another quickly.
You in the meantime are finishing her treasures and getting her shoulders inside. Now the dress can be removed and you can watch as a few more swallows take her head out of sight. Her long pigtail now trails out in front of your and you slurp it up like a strand of pasta as you feel her 4th eruption, another minor one.

Talk about a feed. There must be close to 500 lbs of girl in you now. That's what you call eating! [But you can't help wishing Franky had a roommate. You just can't get enough of the ladies.]
But getting that much mass back to your room is going to be a real chore. And then you will have to spit them up. Maybe just take a nice nap here and digest the lot of them. Of course, that is against house rules, and you started out to help Lizzy do some digesting, not to digest her.
But a lass feels so nice when she is digesting...