I love my wife, but I'm so sexually frustrated

I am 33 and my wife is 40. We have a nice house, 2 beautiful daughters and have been together 13 years. We both work hard in our own ways, I work 2 jobs with days and nights, she works 2 days a week in paid employment and looks after our children the rest of the time. She is an amazing mum to our daughters and I regularly tell her this.I work hard to ensure we have financial security, new cars, holidays etc, but our sex life is virtually non existant! The time restrictions she places on when she 'may' be in the mood is less than 2 hours a week and if i'm at work then this time is lost. I appreciate my sex drive is higher than hers, but once every 5-8 weeks is just not enough. She is beautiful, but it now feels wrong to look at her, let alone touch her. I have spent 2 years thinking it was me and have changed in ways she states is positive, but now I realise the issues are hers and I have done all I can. I have never strayed elsewhere and nor do I intend to, I just want the love, respect and intimacy that we used to have. Please help

I know exactly how this feels. The best advice I can give you is to try and talk to her about it. When you do though try not to make it sound as though you blame her, but that this is the problem and how it is making you feel. Also take the time to listen to her and be certain to see if there are things that are bothering her. Maybe trying to set aside something like a weekly date night would help get things going in the right direction.