Getting spanked by a homeschooling teacher??

So I started home schooling about a year ago with this girl that my dad knows. She was losing her apartment and needed a place to live. So instead of paying rent at my house, she agreed to be my home school teacher. She was doing a magnificent job for the first few months I think. Then we got really involved. Like she was starting to act like my mom (my mom left when I was 15) and was teaching me to cook and clean right and all this other stuff and when I would get in trouble with her, she would ground me or take my phone away or something along those lines. Well then I stopped caring whether she took my phone or the computer away. I always found ways around it.
Anyway, like 4 months ago, she started spanking me... Mind you I'm 17, but I was 16 when she started doing it. She puts hot sauce in my mouth when I say things out of line, and depending on my behavior, she either spanks me or makes me sit on the couch for a "timeout".
I'm wondering if all of this is normal... Sometimes I am a pretty good kid/young adult. But I know that I do get out of line sometimes. I know that I throw things sometimes and mouth off a lot and go out when I'm not supposed to and come in past curfew. She also makes me go to my room at like 8 some nights because of my "behavior". Plus I never get my homework done on time. Well, not all the time anyway. So I know that I'm not the easiest to work with. But we have gotten a lot done with school and I have learned a lot through all of this. So should I let this keep happening? She's like the coolest 24 year old girl I've met. And I respect her. So I'm not sure what I should do.