Is it a new bike? if she has been mis-sold a new bike that doesn't fit her, take it back and ask for one that does?
Yep.
If she walks in with an ill-fitting bike and a receipt, any shop worth its salt will concede that she's been given shit advice and swap it.
@Balki started
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Yep.
If she walks in with an ill-fitting bike and a receipt, any shop worth its salt will concede that she's been given shit advice and swap it.