I’d suggest you look at mones with a more is less concept. LT, TUTH, IO, and IG are usually good on their own.
As you are in an LTR and she is dealing with some serious issues… has this sensitivity included food? I had a girl friend who had this type of issue and did havoc to her eating habits… troublesome to say the least.
If you’ve been having other relationship concerns, I’d look at just using IO and IG and talking it out with her. Listening honestly and with empathy is the best attractant… 
The IO, with this kind of temperament, will smooth out the communications and with you guiding the conversations with warmth and compassion… you’ll get her hot for you! The IG will bring out the view in her of your gentle interest in her by signaling your ability to take the lead. If you show these qualities that I know you have for her, these two mones will smooth out your interactions.
I think TUTH or LT would be too much none for your interactions with her. You can’t force someone to be all horny… I know, I know, us guys are wired differently… been there… But the women folk, especially in an LTR, require tender care… taking into account their emotional states…
I tried TUTH with my wife and it bombed… possibly, my experience and the input that I got from other experienced mone users could help you as well:
On my sig below, I’ve put in some excellent links to threads that I wish I would of had from the start of my own mone testing and I share them with all… I suggest you take a look at them. The amazing in a bottle is my own journal, and it’s optional… The rest I do strongly recommend. However, to know a bit more about Androtics and the nature of mones I’ll also provide you with this favorite of mine.
If you take a look at this link, it’ll also indicate the importance of using limited amounts of mones as they can be very strong stuff.
IO, I believe, uses a Neroli scent package. It’s at 6% so it’ll be pretty mild. However, I know, for someone with scent sensitivities you can never be sure until they are exposed to the scent.
Wishin’ you well with the choices and conversations you make!