I am sorry to hear that you are having a tough time.
It is so difficult when a previous family trauma is handed down to younger family members. These remain with us and become our own blueprints and for pregnancy and birth this can be very unsettling indeed.
Obviously you are not your mother. Her experience is hers alone. We do not know how your pregnancy will be nor your labour and birth - but you can influence so much about how you will experience the remainder of this pregnancy and how prepared you feel going in the birth.
So, what do I recommend?
Read other stories about birth. Start with the Natalie Meddings book 'How To Have A Baby' and Milli Hill's 'Positive Birth Book'.
Then read more accounts of birth. You can find a good mix of experiences here: https://www.betterbirthstories.com/better-birth-stories
Then consider what antenatal course you would like to take. I wholeheartedly agree with the comments above for a Hypnobirthing course (I run Better Birth Stories so would do!!). You can take the online home learning version of our course here: https://www.betterbirthstories.com/hypn ... ine-course
or book in for our popular One Day Group Hypnobirthing Course locally here: https://www.betterbirthstories.com/lond ... ng-classes
What else might you like?
Well, Dr Sara Wickham has a wonderful website choc full of birth information here: https://www.sarawickham.com/
Rachel Reed's - Midwife Thinking can be found here: https://midwifethinking.com/
And the NCT can be found here: https://www.nct.org.uk/
And lastly, if you still want a c-section after all of that reading then you are absolutely entitled to one. You will have considered all of the evidence and be making a decision that works best for you.
Best of luck with your pregnancy and birth and do feel free to dm me if you have any questions.