1. You’re assuming a couple WANTS to abstain to avoid pregnancy and
2. Abstaining from sex isn’t always an option for women in many of these patriarchal and misogynistic situations.
If you don’t want to abstain then point 1 is irrelevant.
I say all this to say I don’t think Jill Rodriguez is doing anything medically to enhance her fertility, it’s just human biology (although she and David together might be slightly more fertile naturally than a typical couple their ages) .
My great grandmother had 12 children (the baby is my last living great aunt she had at 47, sister to my paternal grandfather), only 2 died before 18 yrs and she had one set of twins. Between 21 and 47 she had 11 pregnancies that ended in a live birth, WAY before any sort of assistive reproductive tech. She didn’t consider herself especially fertile, but lucky that the kids were born healthy (one died from influenza as a teen, one from a fever as a toddler). Her baby child is still alive and 85. That wasn’t that long ago in the span of human history.
Yes there are some couples who just didn’t have a lot of kids for whatever reason before medical contraceptives (perhaps they were committed to abstinence, had a lower sex drive, hated each other, financial reasons etc), but there are other couples who popped out a baby every year or every other year like clock work until the woman entered peri-menopause. All of those children weren’t expected to live to adulthood with infant mortality being what it was.
Bring in a woman like JILL who thinks she’s breeding for Jesus she WILL be pregnant as often as biologically possible.