I answered that question. Now you want more?
Asked and answered, buddy, it has been asked and answered.
What scant Scripture you have brought can scarcely be seen as firm basis for the fully fleshed-out doctrine of "Purgatory". One sees such an idea as that, neither in the earliest writings, nor elsewhere in Scripture. The doctrine assumes some punishment we endure makes us somehow good enough. Other apologetics explain that since mankind is sinful, even those with some knowledge of, acquaintance with, and devotion to the Lord, can still be found to have *some* sinful attributes. Since that is the case [the logic follows] that after earthly death then they must be held in a place of transition, while "purging", since one is not fit for heaven...meaning the blood of Christ is NOT sufficient to blot out ALL sins, or something...
Is imputed Grace only sufficient for Mary? that seems to be the case...listening to the cacophony of Romish teachings and commentary regarding such...
More specifically towards the subject of Purgatory again;
Hardon the Jesuit might be your guide, but he is surely not mine.
As for the stubble being separated from the straw, as it is written, there is mention of "fire", but no hint of a place somewhere between this life's realm, and the heavenly. That "extra" much, is pure invention. That it is a heresy, homegrown within Roman Catholicism, is again, not my problem, regardless of all the RCC "explaining" not found in the Word, and even in conflict with the same.
You did not answer the question. I am fully aware that the Church may not teach contrary to the Holy Scripture. That is what your quotes were "answering".
It is possible that your understanding of Purgatory as "punishment" is not seen in 1 Cor.3, but as far as Catholic understanding of Purgatory, and the redemption by Christ alone, 1 Cor. 3 is indeed a sufficient prooftext.
No we don't teach that Mary (or the Good Thief, or many other people) went through Purgatory or needed it, on their way to Heaven. We do teach that some, -- we don't know who and how, -- is purified from the effects of his inferior works, as 1 Cor. 3 explains, before he enters Heaven. How come the blood of Christ did not prepare them fully, -- ask St. Paul, he wrote it.