Terecia...

You are right. Native English Speakers do use the pronoun she to refer to inanimate objects (things that are not alive) like cars and boats and any objects that they really like/love.

Using she in this way originated many years ago when sailors were discovering the world. The ships usually had female names and the sailors even thought of their ships in the same way that they thought of their mothers. Their mothers and their ship protected them.

So, can we call an inanimate object she?
Well, yes we can and we do.
We use she like a term of endearment, something that is as precious as a real human.
But is it strictly, grammatically correct (according to prescriptive grammar)?
No.
The proper pronoun would be "it".

Yes, we use it for humans and animals when we do not know the gender/sex of the human or the animal, e.g.,

- It is difficult to know the gender/sex of a very young baby (unless the baby is naked), so we would say "It's a beautiful baby". But as soon as we know the gender of the child we would say he or she.

- It is also difficult to know the gender/sex of an animal, so we would say "It's a beautiful dog/cat, etc.". But as soon as we know the gender of the animal we would say he or she. We say he or she, because we love our pets, so we treat our pets like the pet is a part of the family, thus he or she.

Remember: it's = it is    and     its = belonging to it

It's a nice dog.
I like its size, its colour, and its face.

The cat bit its tail of OFF.