Why do I have to put sunscreen on my mom forces me to use it?

I'm 14 and started grade 9. Last friday of school and it was one of the school wide fieldtrips for our garde so we went to the waterslides for the whole day we got a form like a week before we went. i had to wake up real early on friday morning at 6;30 cuz the bus leaves early i was real tired and my mom told me to come into her room and there was this huge bottle of sunscreen on her dresser and she told me to take off my shirt so i did then she got the sunscreen and put it on my face then i had to stick out each arm for her to lather then all the way down to my feet and it took at leest 5 minutes and she put on way to much u can see it on my arms and legs still and i looked like a snowman. i told i could do it myself but shes just like thats my job i could easily do it myself but she said shes gona do it for me until im SIXTEEN. i dont have any siblings my mom is a long fitness insturctor and beauty consultant person so also and she always puts cream on her face before she goes to bed then calls me in to her room and she puts it on my face too and it gets annoying cuz thats for girls only.

its so emberasing on the bus everyone else in my class had sunscreen on to but they all put it on themselves or said they do themselves and im the only 1 who my mom does it for me but i also said i do it myself…Y is my mom the only one like this when everyone else in my class does it themself and i have to wait untl im 16? i want to know from parents that im too old for her doing that to me?

my mom says ther is skin cancer in our family her sister died of it but i can stil do it myself…im the only 1 its not fair

and no every1 in my class already had it on no1 put it on when we got to the watersliders everyone smelld like sunscreen and every1 looked shiny when we all met at the class to go on the bus. no other mom dose this! (I live in Australia BTW