Aromasin while dieting - not on cycle

[Rastas]

As the title suggests, I've spent a few hours researching but I can't seem to find a definitive answer. My girlfriend's dieting at the moment and would like to add an Aromatase inhibitor (AI) to assist with excess estrogen and enhance her fat loss. Now, she is already quite lean but does hold in her triceps and thighs. Girls, who has experience with using Aromasin on a cut and did you find it beneficial? Did you experience any significant side effects?

Thank you