How to track child instances in parent class

I have a **simple** design question about a good way to implement LV OO.
I have a parent class (multiple instances) with a single child class. The parent class needs to keep track of all "active" instances of the child class because some parent methods must be applied to all children. Is there a way for this to happen automatically in LV? I'm not aware of any, so I assume I will have to use some "register" and "unregister" actions for creation and destruction of child class instances. But how do I track them; where do I store the list?
It would be easiest to simply add an array of child class references to the private class data of the parent. However, LV seems to not support this due to "circular referencing". I am not familiar enough with OO, nor it's implementation in LV to know what is a good design approach to accomplish this task.
Any suggestions?

What I am trying to do:
I have one or more TCP connections that I am using. The parent class is the TCP connection. The private data for the class is a queue reference. The queue data type is a type def cluster of relevant parameters. The queue has a maximum of 1 element. The reason for this abstraction is that our applications use many TCP connections "simultaneously." As such, we want almost all of the TCP support VIs to be reentrant. This means that we need semaphore action when connection parameters are changed, and we use the queue to achieve this.
The TCP standard guarantees that each message is delivered intact, but does not guarantee message order. Sending large waveforms (or data from a continuously measuring process) requires additional work to ensure that the messages are correctly reordered on the receive end. We created an Ordered Data Stream (ODS) construct to accomplish this. That is the child class. Each TCP connection has 0 or more ODS. Each ODS inherits all the TCP settings from the parent, and can use the parent communication functions. It seems this is a textbook example of the usefulness of inheritance.
However, all good parents are able to keep track of their children. The TCP class needs to be able to track all active ODS instances on that TCP connection. We are struggling with the best method to use for the TCP class to keep track of all ODSs. Adding an array of ODS class instances to the TCP "private data" does not work, due to circular referencing between parent and child classes.
In response to trying a grandparent class:
We tried using a grandparent class. We added an array of grandparent classes, from which the TCP class inherited. The array is actually ODS instances that have been (2X) upcast from ODS to grandparent (more general class) to be stored in the TCP class data. We found that adding the array of grandparent classes to the TCP class created a VI that could not compile when we attempted to place the type def cluster ("class data") on the block diagram of a VI in the TCP class.

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How to track child instances in parent class

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