TinyXML2 - insert element in middle of XML

I'm looking to add new elements with data to the middle of my XML structure. I can currently add the additional elements but they are being appended to the end of my XML file. How can I append them where I need them?

Current code:

XMLElement *node = doc.NewElement("timeStamp"); 
XMLText *text = doc.NewText("Time data"); 
node->LinkEndChild(text); 
doc.LinkEndChild(node); 

And an example part of my XML structure:

<mobileDevice>
    <mDeviceID/>
    <deviceDescription/>
    <units/>
    <devicePlacement/>
    <quantisationResolution/>
    <realTimeInformation>
        <runID/>
        <sampleRate/>
        <startTimeStamp/>
        <endTimeStamp/>
        <data/>
    </realTimeInformation>
    <event>
        <mEventID/>
        <timeStamp/>
        <data/>
        <support/>
    </event>
</mobileDevice>

I'm looking to add it addtional timeStamp tags under mobileDevice->event->