Hi BPhero - Welcome to Pherotalk! 
Looks like you are on a head start already and have found a good dose with the IO at least.
You used TUTH correctly as well but you also seem to have hit OD level with it. Which at 21 is not surprising as TUTH is mainly none and you will already be producing a decent amount of none yourself.
Its not all about none for sex - especially with a woman around your age, all the other feelings come into play here and you could well have used a spray ot two of that IO to moderate the raw sexuality of TUTH and maybe reduced her “frustration” Instant shine is another good one for this as it adds a happy/feelgood layer that could also help. Same with IH - As you already knew and were comfortable together, it would have helped by promoting feelings of bonding and closeness between you. Take your pick!
Of course this dosen’t mean that loading them all together is always good - For a start, that could drown the TUTH but one or two well chosen socials can help promote the basket of feelings that go hand in hand with full-on attraction.
Ammo is also worth considering as it is a far more balanced product, with none, nol and rone - which helps promote feelings across the board. Do your sweet spot testing to find your effective dose first, then combine with a little Instant Shine and you have one of the best mixes there is.
A lot of the basic info on choosing and using pheros is laid out in this thread:
Learn well and have even more fun!