My mom is ISFJ.
She has a heart of gold and speaks kindly of others, and is very good at remembering special days and things that particular people like... although sometimes she doesn't update her data banks very quickly. (She is still occasionally buying me store-made blueberry muffins that I don't like ever since the recipe switched years ago... but she's kind of a 'duck and run' gift giver, so it's hard to talk to her directly about it without sounding ungrateful.) She's also very good at maintaining stability.
But she also hates and fears conflict to the point of not going there when she needs to; and she's also very set in her beliefs, while also not being a very rational thinker at all; so although she'll try to listen, it's very very difficult to communicate anything of complexity or anything that doesn't align with her prior beliefs, and even if she seems to be giving cues that she gets it and agrees with you, she'll go right back to where she was before next time it comes up and it leaves you wondering if, last time, she didn't really get it but was just trying to keep things peaceful.
When I was younger, she would make sacrifices for me that I didn't want, and she would take refusal of her gifts hard -- although she wouldn't make a public scene, she'd just disappear... and later I'd find out she had been crying in her bedroom. So I was torn between pity and anger. She definitely FELT like a martyr in her self-perception, but she also has that resilient mindset driving in part by her religiousness where she doesn't care how she feels, she still does what she thinks is right and kind and good. Which can be a good thing or a bad thing... since continually ignoring one's inner emotional barometer can be self-destructive after awhile.
So my relationship with my mother is weird; I respect and love her, and appreciate how she has given herself to her family as best she could, but at the same time she was never a model for the sort of woman I want to be and can be, she and I just are not much alike except maybe in the shyness area (which I've overcome in online arenas and some public ones) and also just not wanting to engage in conflict. I felt like she was far more fragile than me.
In terms of its effect on me?
I learn and I adapt. I had to learn to adapt to my mother. Early in life, I withdrew in order to preserve my autonomy, not use her, and be independent... but I realize now I think that hurt her in some ways, and I wish I had been okay with letting her care for me more and being more overly appreciative of it. I do have some negative reactions to (1) people who always do nice stuff but never speak their mind even when I can tell they don't like something, (2) people who give gifts without accepting gifts themselves, as well as give gifts that AREN'T actually suitable for the persron but interact in ways that prevent the error from ever easily being corrected, (3) people who dodge necessary conflict to everyone's detriment, and (4) people who leave you feeling bad when you feel you can't do what they want... low-level manipulation, even if it was not entirely conscious on their part. And rigid Fe standards are part of that bad feeling; I don't like following rules just because they exist nor being judged for not following them, I like them to make sense. I also (5) consistently carry with me a fear of not being understood, especially with people I love, and thus being vulnerable.
Then again, it gave me an appreciation for structure, and an understanding of Fe perspective, and it forced me to try grasp why she is the way she is and even work on finding new ways in myself to accommodate the things that are just her even if they aren't me. I also value her fidelity, her somewhat naive but resilient endurance in what I see to be hopeless situations, her faith, and her ability to still try to love people she has no way of understanding. (My pathway to love is often THROUGH understanding.)