she was way more successful before she went to the pitching coach ( it was frustrating for her trying to throw in what seemed unatural to her.
HE coached students have success DESPITE the coaching they receive, not because of it. Most HE coaches couldn't recognize IR under the hood if you pointed it out to them. All they care about it the pointed elbow. If the pitcher does that and throws with IR, most will think she is doing exactly what they are instructing.