What types of scratching posts? Tall vertical ones? ones that lay flat on the floor? fabric? Carpet? Sissal? Cardboard? Not all cats like the same materials. Some like to REALLLY stretch out, others like to be compact.

How often do you trim her nails? My one boy scratches a lot and I have to keep his nails trimmed short - short enough that he can scratch merrily the day away and not do any damage at all. I do his nails at least twice a month