When I was growing up we did not as a family and by that I mean aunts etc live close to each other. Relationships with aunts, grandparents were birthday cards, and presents and the very occasional ‘do’ such as a wedding or holiday.
Nobody accused anyone of not loving them. Or of not ‘having a relationship’. It was not a day to day relationship. They were relations. Aunts did not ring up wanting to know how Toby was getting on at school each month. Call them family A. Their relationship was not something they had to ‘prove’. It existed. Regardless. They often live far apart.
Some people have what I call close families. Who are each others friends as well as families. They socialise together. They go out in the evenings together. They see each other every week. They do usually live near to each other. These families and how they connect to each other are different from family A. They have been raised to be close. They are involved with each others day to day worlds. Call them family type B
If you are from family B and marry someone from family type A you will have different expectations of how families should communicate. So it needs resolving. Understanding the difference is key. If you are from family A and marry into a family B it can seem overwhelming. The constant contact. Dropping round. Vice like. You don’t feel entirely your own person.
And with both families, those with the children do need to volunteer information. And bear in mind if there are a lot of children to have a relationship with, your relatives could find it exhausting. And spend a lot of their time progress chasing for updates.
They are your children. Not your aunts, uncles, and cousins. The level of contact will not be the same as yours.
If information is sent the receiver may not think a reply is needed. Although usually it would be given. If no reply after two years I would wonder if you have an old address ? OR are they ill ? I would think of other possibilities first. Not just ‘they do not love us’.