Is It Normal?

Is it normal to worry about your mom/want to take care of her? My mom just divorced my dad and she lives alone. I call her once a week to see if she’s doing okay and to just talk. I’m currently visiting her and while she’s at work during the day, I’ve been helping her do the laundry, clean her apartment, fill her car up with gas, make sure her fridge is full, etc. She does appreciate it all, but I’m just wondering if it’s normal. My mom can be really naive at times, so I guess it drives me to make sure she’s alright now that she’s by herself and lives in a different state than me. I don’t see it as a burden or going out of my way, but I’m just curious if anyone else does this for a parent.