Possibly but you don’t seem to need it and you are getting good results from a very straightforward mix - sometimes increasing the complexity can work against you but as you get to know her better, this will be less problematic and you will get a better idea of the nuances to explore.
It probably won’t do any harm to try it but I would suggest you run with Ammo/IH/IS for a bit longer yet - simply to strengthen her associations further, then do what you like. A1 can produce results in surprisingly small doses but its value is highest around her period. 
The other thing is that A1 (main component of IFM) is a potent none moderator, so using it alongside IH (also a good none moderator) might need you to adjust the Ammo dose to avoid making the mix too just-friendly. The “crush” properties of A1 also take repeated exposure to kick-in and again you seem to be doing just fine in that department.