No, it is not sunnah but it is permissible, keeping in mind that she has to cover her hands if there is a non mahram around

https://www.assimalhakeem.net/node/3169

Is it sunnah for women to use henna on their nails?

Women clothing | March 21, 2014 8:28 am
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Sheikh, can we use perfume or any prher musk to clean our private parts.I have heard it keeps the devil away.
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What is the ruling on women shortening their hair? Can she shorten it because it’s more comfortable for her to have short hair?