Even if she turned out to be not right for you, it would be enriching to your life to get to know her. And if she is the less-perfect subtype, she is still the 2nd best of 32 types for you that is in your age group and more importantly, in your actual life. Odds are, you may not meet an eligible #1 type for you in your life that is available when you are, and is attractive to you. Just think of all the people who are in far less-perfect Socionics relationships and yet they have GREAT and very long forever marriages!
In a relationship with her, if she was "2nd best", you would probably end up strengthening your Ne a little, and she would strengthen her Te a little. Like everyone else in a relationship, you would ADJUST in many ways to each other. It's still a dual relationship, and Dual relationships are the most healing of all relationships, simply because of spending time together. I can attest to this, for both my husband and I, married 4 and a half years now. It is always peace to be together. This is wonderful for you because you have had psychological issues (depression and anxiety) and this is so benefitted by a partner that is healing just to be present with. Plus she understands mental health challenges. And SLIs are so accepting. But SLI does need to know you are interested - you are the extrovert and need to show her some interest. Just suggest doing something together. Remember it takes time to establish a Dual relationship usually.
(I did not read this whole thread so sorry if it is irrelevant bec. of new developments).
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I am skimming over this thread before I sign out, and read that you said, "my memory..." - which reminds me of an addendum I had meant to add to this post. Have you read about very low carb/high fat diet? It's not only for weight loss, though it is popular for that; it's for health on every level. People go on it and within a month are healed of depression and anxiety - among many other things like cancer! autism! (see The Magic Pill documentary on Netflix). Grains and gluten and carbs in general cause all kinds of havoc. I am reading Grain Brain right now, and it is really illuminating. It is reinforcing the very low carb/high healthy fat diet I was already all on board with. When I read your first post here, I thought of how a month into this cure-all diet could make you wonder if you even have these psychological issues anymore. Then you mentioned memory - it cures that issue too! My husband and I are very committed to this diet now, and I love the energy I have, and dependable clarity of mind.