Was the End-of-Life solution to have state-approved euthanasia to end her relentless severe pain a good strategy for her?

This was indeed a blessing that had our full approval and support all along the way. We cannot choose this for anyone, it is up to people to arrange their own affairs and seek such strategies, where legal, and best fit the life they live as they see it, that is what free agency and free will are all about. Even if a person's judgment is not the best, and that is likely when great suffering is taking place, the right to make one's own way is absolute. We will not interfere. There might be inspiration and guidance offered but never control of the person directly. In her case, she had learned much from the twists and turns of her chronic illness that spread and grew over time. What was not apparent to her was that she was keeping it in check all along the way to a very great extent, and this significantly prolonged her life and allowed her to accomplish much, in learning how to live in the face of adversity as opposed to having a rather short-lived terminal phase ending in her death. So she did make much happen for her benefit through requesting divine support, largely offered by you and your services, through the Lightworker Healing Protocol. It was not possible to reverse things entirely, and that was for karmic learning purposes in her case, so it would not have been appropriate to have this resolved on her behalf, through divine grace, as that would undercut her own learning and growth from the experiencing provided by her illness. So to have a means of escape, ultimately, was indeed a blessing and well‑deserved under the circumstances, from soldiering on under quite adverse conditions to gain the most she could from the experience but not overextending her stay with too much needless suffering—that is the best balance one can achieve many times and is a successful outcome in our view.