I think it's OK that she's not fully potty trained just yet... it is hard with bulldogs Does she at all show signs of wanting to go out before she does her business inside, or does he just go where she likes?
Is it possible that she's got an UTI? I'm asking cos our basset did kind of the same, she would be able to hold all night and never peed inside when the door was opened but if the door was closed she would go inside. I never saw here squat often but one day she peed every 5 minutes so we got a shot for UTI and after that she's only peed inside once. She's now 6 months old.