Question on the subject: Caution from the Lord to the art of his friend

Hello, Your Honor,
I would love to hear your advice based on Torah.
The background to the question: I work in the medical field in a very specific subfield in which there are not many experts. On my team at the hospital, there is a colleague who works closely with me, and since she is older than me and has more experience, she is frequently invited to conduct professional training courses and workshops in the field. Several years ago, she began conducting a specific course in this field, and it is the only course in Israel in its scope and depth on this subject.
A few days ago, I was contacted by the Maccabi Health Insurance Company with a request to conduct a seminar on topics that are tangential and even overlap with the topics of her course. It should be noted that Maccabi requested a daily workshop, while her course lasts several weeks, and also, the workshop is intended primarily for those who have already undergone some training in the field (but is also open to those who have not). On the other hand, an internal check I conducted revealed that they had contacted her first, but she refused, claiming that it would affect registration for the large course she is teaching.
My question is, is there a halachic problem in accepting Maccabi's offer?
I know that she will be personally hurt by this, but in my opinion she was wrong in her decision not to hold the workshop, since there is a great need for knowledge and training in this field, and not everyone can afford an expensive course that lasts several weeks. Therefore, I can justify in my own eyes the possible harm to her and our relationship. However, it is not clear to me whether there is also any halachic problem here.
I appreciate your answer.
From the air