From your link:
“Not all embryos implant and not all implanted embryos will further develop to fetuses, and not all fetuses end in healthy babies.”
People may use the term implant, but it’s used incorrectly. The doctor transfers the embryo. It’s basically a crap shoot if they are going to implant.
Yes, technically “transfer” is the only correct term for what the IVF doctor actually does with embryos. But any embryo that has turned into a baby, no matter how it got in there, has to have “implanted” after its arrival in the uterus. It’s quite possible that journalists who aren’t clear on this have scrambled the grandmother’s statements, and that the grandmother was using the term correctly, referring to embryos that resulted from fertility drugs, but not IVF, and then implanted themselves. I can see a journalist assuming this meant “implanted” (as in transferred) by a doctor, and then arranging information about other things the grandmother said in accordance with this mistaken assumption.