Is there a way to fix the glitchy behaviour of quest NPCs?

I have a few quests that I have completed but the quest NPCs do not acknowledge that I have completed the task so I am stuck......

One of them is in Vault 81, the quest called Dependency, where Tina asked me to convince her brother to go see the doctor's assistant (Rachel or whatever her name is), I convinced the brother and then went back to Tina to complete the quest......the whole conversation with Tina went fine until I persuaded her to join a settlement and this some how cancelled the dialogue and the quest is stuck now.......

During the conversation she thanked me and I successfully persuaded her to come and join one of my settlements but then dialogue was cut off, I did get the XP for persuasion but the quest status is still incomplete and its still telling me to talk to Tina.......And now when I try to talk to her, it doesn't initiate the dialogue wheel but instead she keeps asking me to convince her brother to go to the clinic, but that's already done as I mentioned above...........

I believe that persuading her to join a settlement broke the quest, because as soon as I successfully persuaded her to join a settlement her character body blinked for a second and the dialogue was cut off....it felt like that persuasion some how reset her character and the quest mark is still showing up on her head.....

So what do I do now, is there a way to fix this or make Tina get out of this phase that she is stuck in? Please help....

it worked.....in strangest manner.....

I disabled Tina through console and then re enabled her..........she told me to go talk to the Rachel (no dialogue wheel, just said it as I went near her), i went to speak with the Rachel and got the quest completion experience...........

It is strange because the Pipboy kept telling me to talk to Tina but I actually had to talk to Rachel..........I guess this needs to be fixed.........also Tina didn't tell me to go talk to Rachel until I disabled and re-enabled her.