My Teacher did something to me and I don't know how to feel about it..

Sorry if this is really short but it just happened today

I(13-15,because i don't wanna give out tew much info) am going to an all girls school with majority of the teachers, being female. I, now have this female teacher (40s-mid 40s) that has taking a grand liking to me, not bad, right?!

She often is a lil too cray cray in class like she always complained bout our class misbehavior (i honestly don't care). I just so happened to be nice to her(cuz i want my grades duh) and now we kinda have a bond.

Now you have some lore, here's where I am a little bit too uncomfortable..

I am genetically blessed by God to have thick thighs and a very uhh appealing bottom( i honestly do not like talking about my body in such a way) and I love it. But for others people to comment on it,nuh-uh.

I was walking out with my friends to head to PE when that female teacher said and I quote, "You have some thick thighs.." like seductively in a way and proceeds to slap near my ass

Now actually that is not the worst part...after PE we were saying our prayers(i go to a christian school)and she said "OP,you have a very nice ass,"

In past I have been sexualized and maybe even SA (idk still trying to figure that out)this made me very uncomfortable. Even my friends were worried and cringing at the fact that she said that and was very worried for me

Now I really need help, do I tell my mom about this(we have been on the rocks lately, due to her IGNORANCE of me being absolutely stressed out with schoolwork and then fussing about sum dishes I did not clean, like there are people dying out there..)She is honestly my gal pal but I am scared she will call my principal and make a big situation out of this.

I will neither talk to my guidance counselor (we all know why) nor any staff or family member. In the meantime, I'll try to find some comfort with my Lord and Saviour, Jesus Christ but it still itches my mind..

Should I tell my mother? Or should i just tell somebody else (the female teacher is also my class and subject teacher, meaning she can just brush it off and my prinicipal is the type to say, teachers are never in the wrong

I'll try to update as soon as I possibly could