Beware of granimosity. It isn’t worth it. Honest. Whilst it may be difficult to negotiate your relationship with the in-laws, i.e the ‘other’ grandparents (be it maternal or paternal), it’s wise to build a strong sense of grandparent camaraderie. That includes step-grandparents too. Trust us when we say that it’ll help you to assess your own role as a grandparent and ensure that there’s no unwanted competition.