Hi There,
I'm sorry to hear about your situation. Has it actually been confirmed that she is going through early menopause, or just something the clinic has told you because she never responded to the drugs? I would go for a second opinion?
I personally don't like Buserlin. I responded quited badly to it, rather than down regulating me, it actually stimulated me...... I was told by the clinic that it had been heard of that this can happen, but in all the years they had been using it, it had never happened.......

The first cycle had to be cancelled, and the second cycle they used Buserelin again

, they told me it was impossable for me to react the same way again...... but I did.
Drugs affect different people in different ways. What some clinics know, others don't.
I hope everything turns out ok for you both.
Good luck
Tessa