It might very well be placebo but it helped me deeply and I can see why women that want to give it their all would try it (and that's why I don't begrudge her counting those jabs). If it helps anyone - my first cycle was without acupuncture and I barely got 4 eggs out of it. I underwent acupuncture for 3 months before my second cycle and that got me 12 eggs.
When each cycle costs about 30k USD, a lot of women with low amh, egg quality or ovarian reserve would try anything to help tweak the odds!