No it is not against church teaching that she helped you. Many have found help from all walks of life to get to where they are now.
Oh, don’t get me wrong – I’m not saying that help isn’t a good thing, in trying to discern a vocation!
And I am pretty sure not all vocation contacts are priests.
And I’m also not saying that
only priests can help discern.
A Teutonic Knight:
She helped me realize my vocation.
However, I
am saying that priestly discernment is something that happens between a man and the Church (more specifically, between a man and his diocesan bishop or the superior of his community). Unless and until a bishop calls a man to orders,
no one can say – unilaterally – “I am called to be a priest”. Not even if twenty mystics are standing there, whispering in his ear “you’re gonna be a priest, dude!”. That’s still just twenty
opinions.
What’s being said here is equivalent to a guy who says, “God’s calling me to marry Sally”, and someone he trusts says, “oh, totally, dude! You and Sally are definitely getting married!” But, until you ask and Sally says ‘yes’, it’s still premature – and inaccurate – to say, “my vocation is to marry Sally”.
Hope I’ve made myself clear: I’m not saying that Knight doesn’t have a vocation; I’m not saying that the nun in question isn’t good or holy or improperly encouraging vocations; I’m not trying to impact negatively on Knight’s discernment. I’m just trying to say that one cannot decide unilaterally, “I have a vocation”. Trust me – I’ve seen plenty of guys go through discernment and formation at seminary, saying exactly that same thing, and a year later they’ve dropped out and gotten married. In a way, I’m making a plea for humility: “I’m discerning a vocation”… “I think God might be calling me to the priesthood”… “people affirm me in my discernment by telling me that they think I’d make a fine priest”. All these things are awesome to say – and they all lack the hubris of saying “
I’ve decided that I have a vocation”.
(Edited to add

And, by the way, Teutonic, I’m praying, too, for your continued discernment! God will show you His plans for you, if you stay faithful to listening to His call!