What SleepyButch said really resonates with me. Sexual intimacy ebbs and flows just like our daily routines and schedules. Sometimes, at least for me, it's a priority and other times it's the last thing on my mind. And then at other times I conversely long for physical touch or may be repulsed by it. I think that dynamic occurs for so many reasons; age, stress, physical limitations (whether actual or perceived), to name a few.
If you are invested for the long haul, then be patient and love her up when and if she is receptive to it. And have fun but don't over-think things too much.
My few pennies.