Doll,
This is the problem of women psychology.
Assuming her sexual behavior is due to 1. nil satisfaction, 2. or lack of love, 3. or pregnancy phobia or reluctance...
Her condition of low low low sex drive can go on forever TILL her partner helps her to overcome... (eg) she met someone who will induce her sex drive back to normal.
It's perfectly possible to be normal for prolonged low sex drive.
There is one case who admitted that she got low sex drive but met someone who returned her to normal. I believe that because this is...
Sex drive is really due to brain triggers. As long as she is low sex drive and feels ok and her husband has no interest reviving her sex drive... She'd need to meet a gigolo. LOL~