You have been geting some good advice on here but PLEASE DON'T clip your cat's claws

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A cat's claws should only be clipped if they are having trouble retracting them-normally due to arthiritis,which means they cannot retract there claws properly anymore+are out all the time,so get caught on carpets bedding etc..and can also grow+curl under into there pads,and then only a vet should really do this.
Cat's claws,especially if they are an outdoor cat should NEVER be clipped,they are used for grasping onto fences etc..when climbing,jumping etc..and to stop them from falling off of said places.
There main use is for self defence-fighting off other cat's etc..
Cat's claws are naturally kept trim by walking outdoors on pavements etc..by all means keep a cat scratcher indoors it will help them to not use the furniture-if she does'nt seem interested in it show how how to use it by gently holding her 2 front legs and pawing her feet on it-hope that makes sense??.Also if need be buy a catnip spray they love the smell of this+it will train her to use it.x.