Earlier quoted context omitted.
That's because Indian (particularly) men consider engineering to be a safe choice (source: am Indian). Anecdotally, speaking to women (esp American), they find engineering to be categorically unsafe from a career progress perspective. You may not 'see' the bias, but they definitely feel it. The effect is measurable. I am no expert, maybe it has something to do with maternity leave regimes or the interviews (like OP m…
My wife worked as a programmer for a while. There were two aspects that drove her out. First was the cliquey nature of the guys she worked with, she just felt like she didn't fit in. Second was the rate of change, just as she felt like she mastered something the new flavor of the month would take hold and she had to start over.
Then, your wife must have worked with dynamic web pages (a.k.a. web applications), probably frontend, to have that tool churn. Other areas don't change that quickly and even then new tool allows to use most of the past experience.