Is 2 years too long to have post-partum depression?

Pstpartum depression. It should last a few weeks if benign and resolves spontaneously. If longer lasting, and mom has no support from family, should seek treatment sooner as it affects capacity to nurture newborn. Can recur at next pregnancy = sign it can last longer and needs treatment sooner. Two years is too much and mother must be in denial not accepting her condition putting baby in severe danger.