How should I approach my mum about getting my bikini area waxed?

I swim regularly and so I’m sick of shaving my bikini area every second day because it causes rashes and ingrown hairs and also it’s super inconvenient. My friends recommended that i get it waxed except I just don’t know how to ask Mum about it. My muse is quite a reserved person and I’m worried that if I ask she will react badly.