Shes 43 so when she was young, women were thought to be conservative.. like "its a mas job to initiate sex". I get its frustrating but at least shes not saying no or rejecting you. It could be a lot worse. I know some couples in there 20's who rarely have sex at all and theres plenty your age who don't either. You have a loving relationship and your having regular sex. You could try asking her to initiate a little more-tell her it would turn you on and she may try but shes likely just shy and doesn't know how to demand. A year is not that long either, it should get better in time as she starts to feel more comfortable but you should let her know now you would appreciate some initiative from her
"Don't ask a question if you can't handle the answer".