I wouldn't worry too much about it, whether the options greyed out or not, when she has nothing new to say, she's just going repeat the same, let me try to break down these companion dialogues without spoiling anything for you:
1. Thoughts (A bunch of lines randomly played out when you use it, you can keep pressing the button and you can see that, when you hear nothing new, that means you've already heard everything, but sometimes when you're on a quest or some location, some special lines could trigger, but companions would themselves initiate those lines, you don't have to stop and speak to them)
2. Dismiss (send them to a settlement location)
3. Relationship (checking in to see if she's (mad/neutral/likes/idiolize) you) Again, without checking in, companions will initiate conversation or talk to you if any of those "status" changes, to make this even more clear:
Imagine your "relationship" with a companion is a number (-30 to +30), Zero being neutral. when you do something it triggers the "Curie liked that" message, so when you recruited her, your status is 0. when "she liked that" happens, your status changed to 1.
Probably at each status 10, 20, 30. it triggers a companion event that she will automatically talk to you about something. As you can imagine at 30 you get the option to "Romance" her.
The "Relationship" " Just checking in" option is quite pointless, as you can see it just checks the status range like it describes above, what I've observed during my play: Neutral, likes, Idolize. And the game automatically informs you that, and each status change she will talk to you about it and gives you options to "Flirt" "Romance" etc.
4. Nothing (cancel)
If you are really worried about glitching out, you can try:
1. Dismiss her, re-recruit her
2. Recruit a different companion, while having that companion, recruit her again
3. Trigger some "Curie liked that" messages
4. Trigger a ton of "Curie liked that" messages until she starts to change her status and see if she talks to you
5. Doing some of the above will speed up your relationship with her and max it quickly, not sure if you want to do that
Does that help?