Hello Welcome to Pherotalk 
My name is Tisha and I am the hostess and adviser here on PT.
I am sorry to hear your having a bit of trouble with your relationship. It doesn’t sound like you or she has done anything unfix-able though. Its gonna take some work and mones can help but they wont do it for you. I think you know that though.
A314 is a great product, it can attract women, it makes you the Alpha and gives you presence. I think you have that already from what you have described so I don’t suggest it. I will explain below.
What I am seeing is a lose in connection intimacy and trust. I don’t think the trust issue is all about you and other women although the subject probably comes up even though your not doing anything. Women can sometimes feel insecure when they feel the connection break and distance taking over between there partners and themselves. They look for reasons and being suspicious that there is another women is the first thing they look for. The trust that she has lost is not really in you but in what you had together. Of course Monster in law is not helping her see whats really happening by influencing her thoughts in that direction. What happens depends on the women and her way of dealing with insecurity. Some attack the problem head on and some some begin to build a emotional wall to protect themselves from the pain they are sure is coming. That wall is what you need to stop because once its in place its very hard to scale. Communication is key here but if it were me I would attack the problem from four directions or in the case of mones 4 emotions. Connection security trust and wellbeing
I suggest IH 2X strength. This helps open up deeper more meaningful communication. Gives a feeling of connection and in some ways trust.
IFM to increase affection. To calm ease and help her get past the anxiety she is feeling in your relationship
I suggest Instant Gentlemen over A314. You have the alpha part down pretty much. You have a presence and a sort of powerful aura. A314 does evoke trust and respect but it can be sort of cold when deeper emotions are involved. IG increases respect and presence but it gives a feeling of safety security. Sort of like “this guy will be here for me” dependability. This is important in long term relationships especially with strong independant women. Strong women have emotional issues they just hide them better. We need that feeling of security knowing that our men have out back when we need them.
Ishine 2X This gives a feeling of wellbeing, it uplifts warms its charismatic charming its that invisible pull that some people have. It can make things feel new again. IH is good at that to.
Now the more sexual attraction mixes like AMMO TUTH etc etc are great but I dont suggest those just yet. You haven’t mentioned sex being a issue and most times in situations like this its like putting a band aid on a gapping cut. It may arouse but they wont get to the true emotions that are causing the problem.
They have to-go size bottles so you can try things out and see what you think. I know time is a issue for you but you do need to try them out one at a time to find your dosage. IFM is best used to the back of the neck and covered either by one of the other products or cologne.
Now my other advice to you, You had to know this was coming LOL 
Think back to when you were first together and part of how attraction and affection was displayed. Try to incorporate some of that back into your relationship. Spend time with her, really see her, make sure she knows how important she is to you by showing her not just telling her. Men tend to do this through sex its how they connect but its not how women connect. Its the small things like helping her clean up something. Noticing her new sweater, Really listening when she speaks. Being interested in how she feels, thinks and who she is. Asking her how her day was. Never leaving her without a kiss, (I don’t mean when you get up to get a beer but when you go out LOL) All these things lead to connecting.
Another thing to work on is body language. I can watch a couples body language when together and tell you how strong their marriage is and who is having problems without ever speaking to them. Alot of times I can tell you what at least part of their problems are just by how they move. All mammals communicate not only verbally but through pheromones and body language. Its just that Verbal is in the conscious thought and Pheromonal and body language is processed in the sub conscious mind.
I have a basic link in my signature below but I suggest you pop into the book store and get The definitive book of body language by Allan and Barbara Pease. Its a real eye opener and can help you in many aspects of life not just your relationship. I don’t know if you ever noticed this but charming magnetic men have body language down to perfection.
This will help you not only project what your feeling but read what she is feeling giving you a deeper understanding of your relationship.
I know I know your probably thinking I am nuts but really just get the book it will help.
Your GC is on its way 
If you need anything just let us know.
Tisha