Given that low resting heart rate variability has been associated with erectile dysfunction, I guess it shouldn’t be that surprising that a recent study has shown that it effects female libido as well.
From the study:
Women with below average HRV were significantly more likely to report sexual arousal dysfunction (p < .001) and overall sexual dysfunction (p < .001) than both women with average HRV and women with above average HRV. In conclusion, low HRV may be a risk factor for female sexual arousal dysfunction and overall sexual dysfunction.
Stanton, A.M. et al. Heart Rate Variability: A Risk Factor for Female Sexual Dysfunction. Applied Psychophysiology and Biofeedback, 2015.