Sure if she's doing just flashbacks then she can do all her scenes back to back in one or two days and get them into the can (movie insider lingo) then she can focus on her other show. I still haven't seen that show except for the first episode. I have to catch up. Is it really that good?
If your talking about spartacus its ok. Its like the first season of torchwood. It has excessive nudity for the sake of having nudity. For example you will see Erin topless and scenes where you will see her almost all naked. You will see the Roman's wife who got Spartacus into this mess full frontal. But then you will also see the male actors full frontal as well. Just something you should know if your gonna watch spartacus.
The best way I can describe it as God Of War the life action tv show. If you have played those games you will understand what I mean.