hello my friend

sounds like a good idea to me, im going off my experiance and i did the same, i contacted my wife and just said hi and i wanted her to know i was thinking about her and asked how she was doing, of course her answer was "im doing really well".
when you do speak to her its her you talk about, not your relationship and not you unless she asks, dont arrange another call, just say bye for now and that you will be in touch, that way its showing her you care and your not pressuring her into calling you,

my wife told a friend that same thing about stuff affecting our marriage that wasn't down to our marriage, it wasn't long after this she realised that it wasn't just down to me, and she wanted to come home, she also told me she also didn't know what she wanted and was fearful on how to rebuild our lives together, then she told me beacuse she knew i cared and loved her and i made her feel IMPORTANT, she knew we had a solid foundation to start again.
i cant stress enough how making her feel important helped, this was the main factor on her coming home.
this was down to the fact i hadn't made her fell like that for a long time so she felt i had changed,
me speaking to her, me asking about her, me putting her first, me asking about her interest's, etc etc,

now if you did all these things before your wife left this is not going to work for you,
i understand people adivsing the complete NC but im my case it was no good, and it could be the same for you too,
good luck and take care