Your mother gave you golden advice. But I also have to say that when it comes to life and relationships, there is no one size fits all. Ghar ke maslay saas ke sath discuss karne ka faida tab he hai jab wo sincere hon, aur betay aur bahu ko genuinely khush dekhna chahti hon, only then she will give good honest advice to DIL. Warna bohat si saasain aisi bhi hon gi jo khush hon gi bahu betay ke aapas ke maslay sun kar, aur ulti advice den gi jis se maamla aur kharab ho. So it varies from person to person. May Allah further strengthen the bond between you and your in laws, Ameen.