With all due respect to the OP, the poster was asking for an effective love spell,tool to get the job done and fix a problem; not advice on the morality of her actions.
Morality is subjective, sometimes dependent on the patterns one is swimming it(example, religious laws) but most often comes down to personal perspective. Free will is a malleable thing. Every moment of every day, it is challenged and changed. We are constantly influenced, persuaded, manipulated. By other's energies, body language, tone, behavior, words. By ads and billboards; and by our own hormones; by elements of the culture we are living in, the circumstances we were raised in, or rituals and traditions on a mundane and magical level. The idea of truly free will is questionable to say the least and to refrain from mind altering magic is daft when one considers how much we manipulate others on a subconscious level every day, or are being manipulated every day.
And while love magic is not my forte nor something I have much luck in, using magic for "mind control" certainly is, and results I've gsd were more spectacular than merely getting individuals to do something they would do anyway. 20-year-long smokers who had no guilt or issues with their smoking dropping the habit, teachers cancelling tests, people being driven mad, etc. His decision may not necessarily be set in stone and inclinations are questionable.
She has had 11 months to consider this decision, so I assume she is not considering casting a love spell lightly, and I presume she is fairly sick of simply being told to get over him. That said, I agree with Goldendusk's advice, in needing to refine yourself and acquire more self love, as attachment is usually a messy thing to get entangled with and seriously harms the magical process.
When you've stabilized yourself emotionally and you two are on equal footing (as in, your entire life does not depend on whether he says yes or no, but you're just two mature adults with a history that you may seek to rekindle), then you may tackle the object magically and physically and see where it takes you.