face tattoo .. yes or no?

Hi. I'm looking to get a face tattoo yes you may jump to the conclusion and say " don't do it you'll ruin your life" etc.. but hear me out. the tattoo I want is small it's a simple smallish red heart just infront of my ear I would beable to hide it with my hair or make up. I still live with my mum I pay her rent ect I work , my manager said they don't discriminate on tattoos on any body part unless they're offensive. But my mum is going absolutely mental at me ! She's flipping, is this a good idea or not? I really want it I have 4 tattoos anyway one on my finger another trailing down my wrist onto my hand and two on my lower right wrist. I just need advice why is my mum so against it ? I'm 19 btw. Also I have stretched ears , and I've had 11 piercings in total only have a nose ring in now though so it's nothing far from that.