In the main Jain scriptures and well‑known Jain story‑collections, there is no commonly known shravika named “Potila” whose husband insults her and, as a result of that insult, she immediately takes diksha.

So, based on standard Jain granths and popular Jain kathā books:

• I do not find a canonical story of a lady called Potila.
• It is likely a local / pravachan story, or the name may be from another tradition (for example, there is a similarly‑sounding name in Buddhist stories, not Jain).

Therefore, I cannot confirm that “Potila took diksha after her husband insulted her” as an authentic, scripturally‑attested Jain story.