Do native speakers capitalize "aunt," "mother," "father," etc. with "my", "her" if they are using them as a title?
"My uncle works in a factory."
"My Dad is on business in France."
Do native speakers capitalize "aunt," "mother," "father," etc. with "my", "her" if they are using them as a title?
"My uncle works in a factory."
"My Dad is on business in France."
These are not being used as titles. They are being used as common nouns and are not capitalised.
"As a title" means as part of a name:
Please give this to your uncle.
Please give this to Uncle George.
Or in place of a name
Please give this to Dad (said by one sibling to another)
Note you don't say "Father George" or "Brother Tom" (except when they are religious titles of a priest or a monk). While a sibling will use "Dad" in place of a name when talking to another sibling, it is unusual to use "Brother" as a name. So don't say:
*Please give this to Dad George.
*Please give this to Brother.
It is normal to capitalise nouns of relationship, such as mother, father, aunt, etc, and their shortened versions (mum/mom, dad, etc) when they are used as forms of address or as a name e.g. hello, Dad! Dear Mom and Dad (starting a letter), I thought Aunt Sally would come to the party, but not otherwise - did you tell your dad? Is Mrs Jones your aunt? Does your mum drive a car? Peter's mother is a doctor. My father is Dutch.