@TetsuyaLP If it is, then yes, she would have to figure out the spell since setting the perimeters is a part of it, and that would take practice. One wrong "bug", and it is instant death potentially. I won't even touch the language side as I know that there can be several different ways of saying and doing the same basic thing, but it could be very specific for the spell requirements.
Too much potential for things to go wrong without all the info, as she already discovered just with the wind spell. Who knows what exactly would be needed to properly cast a healing spell. Better for her to do what she already knows than to experiment and unintentionally permanently main someone, or even kill them.