It's a terrible choice for a name, and anyone hearing it as it's called out will automatically think of the band because that's the era of music that most of her friends parents would have been around in.
Yeah exactly, this seriously highlights the impact (rightly or wrongly) that a name can have on working in high professional career. Imagine hiring a lawyer to defend you called Tinkerbell.
There's plenty of countries around the world that have laws around child names, whether you have to select from a pre-approved list, or names that don't conform to that countries traditions. It seems in the UK you're pretty much free to choose what you want, and it's clear for decades that some parents have been taking the **** with it.