I must confess that I found Atia totally detestable, but respected Servilia until she apparently used young Octavia to find out what Caesar's illness was, and used her in a way I dont think any mature and apparently heteroseual woman should. I have learnt to respect Lesbians but I still find bisexuality hard to stomach: how come these folk don't care what they sleep with?
IN any case neither the character of Atia nor Servilia as depicted in HBO has any warrant in the standard sources.