Ren would let Mat know she was meeting with Charlie. If he didn't hear from her or one her ghouls in the next 2 hours to assume something had gone wrong.
"Ya need teh gemme ah location Duckie. Else ah'm juss gonna destroy de town."
"The ghouls know. It's a Brujah meeting place..."
"I'll have the guys come to the boat. Then if anything happens they can bring you there directly."
"I'm hoping it doesn't, but...with everything that happened I wouldn't blame him if he attacked me."
"Roux 'as been trainin'im in tusslin'... but 'es still kinda pathetic."
"Let's hope he's not faking it."
"Ah nearly killed'er."
"Small as he is, he's a he. You're a might be stronger than most, Mat."
"Non. Tis ah she. Ah know."
"Wait...what?"
"She don't smell male. Ahn Roux checked. She beh female. She don't want othah's teh know. Annoys meh. It beh ah lie.
Nearly kill'd'er fah it." he could hide it from many people, but not from her.
"Anything I should look out for with her?"
A grunt, "She beh 'nnoyin'. Said ah was 'er type. Ripped out 'er intestines."
"And you say I'm the popular one."
He snorted, "ya beh. 'Aven't spoken to 'er in a month. Ah don't see much ah anyone." the Harpy, the Sheriff.
"Yeah well, I'm fairly certain I'm not so well loved these days."
"Do it mattah what dey tink?"
"Just means I gotta watch my back more than I already do."
"Dat's what ya got us fah, Duckie. Ya ain't alone. Nevah were."
"Thanks, Mat."
"Bein Sur. Now gah. Ah'll beh near."