Here's the fixed save. The problem was caused by you using the save editor to give yourself the Oblidar. This meant that the game read you as already having it so didn't give you the event to pick it up, which is also where the quest advances. This then set up a cascade of problems meaning you also didn't get Rose's Collar which is what the game looks for to start those conversation choices with Tina/Emily. (Ironically, you could have solved this by cheating yourself one
)
I'm actually a bit surprised that this is the first problem of this type you've encountered, as the game's code commonly works this way, even with repeatable events. If you're going to use the save editor, I'd stick to just giving yourself consumables like energy drinks and suchlike and collect quest items the old fashioned way.
(Thanks for remembering to mention you'd used the save editor by the way. I'd have been very confused without that information.)