You will have to nest your loops as you enumerate each parent. Maybe something like this. You could possibly go directly to the child node with the following code but, maybe the parent nodes have info you need. So tthis should iterate through Response and Point. Test it out and see....
Code:
Dim xmlDoc As New DOMDocument60
Dim selNodeList As IXMLDOMSelection
Dim iNode As IXMLDOMNode
Dim selNodePoint As IXMLDOMSelection
Dim iPoint As IXMLDOMNode
Dim elmLat As IXMLDOMElement
Dim elmLon As IXMLDOMElement
Dim intResponse As Integer
intResponse = 0
xmlDoc.Load "C:\Test\Sample.xml"
Set selNodeList = xmlDoc.getElementsByTagName("Response")
For Each iNode In selNodeList
Debug.Print "Response Node Index = " & intResponse
Set selNodePoint = xmlDoc.getElementsByTagName("Point")
For Each iPoint In selNodePoint
Set elmLat = iPoint.childNodes(0)
Set elmLon = iPoint.childNodes(1)
Debug.Print "Point Node Value = " & elmLat.nodeTypedValue & "Lat " & elmLon.nodeTypedValue & " Lon"
Next 'iPont
intResponse = intResponse + 1
Next 'iNode