I agree with the parts of that which I understood. I don't go into that much depth with personality theory because to me it's like digging deeper into the cotton candy fluff. It's the kind of theory that just dissolves itself, and the deeper I go the faster it dissolves as it becomes more abstract, more divorced from reality.
If Marmie is an ISFP, then it's not that she is more E but that she is more S. Or one could say she expresses more SE than usual while still being an ISFP. This phenomenon was predicted by John Fudjack based on the MBTI's circular reasoning fallacy. There is nothing in theory to prevent this type from being iSfp versus isFp except the MBTI assumption that the ISFP must have P-non-closure Fi dominant. The iSfp creates a slightly different type, and the new theory contains 32 types rather than the usual 16. (The Fudjack type theory also omits the P and J.) So if Marmie personally disagrees with the ISFP description, it's only because there is no single type-description in the MBTI that matches her preference order.
The MBTI predicts that Marmie, as an isFp, should have a function preference order of F-S-N-T (or what this forum calls Fi-Se-Ni-Te). But S-F-T-N is also a possibility, which will give iSfp (non-closure Si which is usually considered a j-closure function like the classic iSfj).
This, however, is how she scored on the Fudjack-Dinkelaker Functional Preferences Instrument on 4-24-2011 -
N = 20
S = 1
F = 7
T = 8
In other words, the preference order is N-T-F-S. Intuition was the leading and by far most outstanding score on Marmie's test result.
Marmie agreed with this for the most part, stating only that the F-T difference was off by one letter, hinting that she really prefers F over T, and implying that N belongs at the top in the order of preference.
Let's assume that she does prefer F over T. This gives a preference order of N-F-T-S. So if she is an introvert, that gives NiFe, or iNfj (Ni with j-closure), as one possibility, but it also allows iNfp as another possibility. The latter is an Ni with p-non-closure, which is not allowed for by the MBTI naming convention for determining type.
So yes, Personality Page is crap insofar as the MBTI is a crappy theory based on circular reasoning and fallacy-riddled assumptions.