<human>: I'm not sure where to begin with this since I'm not coming here after some calamitous event. I'm asking for help after a lot of self-reflection on the issue.

I do love my mom very much, but more and more often I've noticed that my mother will make excuses to justify to herself and others that she has done and said nothing wrong or is helpless in a situation. I think the best way to explain it is to list out some real examples. 

1. I'm fat because I have a rare thyroid disorder (I saw a doctors report from last week confirming for the 7th time that she has no disorder, nor is she allergic to gluten)

2. My back is permanently messed up because you were a heavy baby when I was pregnant (someone please tell me this is a thing if it actually is...)

3. I don't trust you enough to treat you like an adult because [some human error I made at some point in my life]. But all of my mistakes were forced and unavoidable. (This circular reasoning still drives my dad up the wall, and now I realize he's not as short tempered as I thought)

4. I'm fighting with someone because they said did something to me unprovoked and got everyone else to hate me (usually turns out she did a dumb and was too proud to apologize instead of fighting someone)

5. If I try to reason or explain any of these things to her, she tries to cut me off until I apologize and accept that she's infallible. 

Now the last one really ties into why I'm looking for solutions to making such people realize what's up. Because at 19 and going to one of the top schools in my country, there'll soon come a day when she tries to cut me off financially/emotionally, and I'll be perfectly content to go on with or without my mother in my life. However, since I do love my mother and would prefer it doesn't get to that point, i want to know how anyone else has dealt with similar people.

Can you provide a brief overview of the text?
<bot>: my mom will fight to the death before admitting she is flawed, even when visible to everyone else. How to approach seemingly unsolvable personality?