Why does my friend act like she’s my mom/older sister?

So I’ve known my (M) friend (F) for almost a year now. She’s very nice and caring which is not a problem, but she’s often too caring. For example she takes me to and from work every day with car even though I never asked her to do so (and when her car is at the mechanic she asks her dad to come and pick me up), pays for my food, gave me her hoodie when I was cold, helps me with a lot of things, etc.

Why is she like this even though I’m a bit older than her?

Why does my friend act like she’s my mom/older sister?
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