Hi Laura,
Was her father serving in the army when she was born on Malta?
I contacted the registry office in Valetta and paid a small sum for them to look for a death certificate which they duly did. If she was married there you will be able to ask for a copy of thier marraige cert
There death certs are huge about 4 times ours an give loads of info, even the time of eath.
I should have the details somewhere, if not I have some friends there, I can ask them. There is a Genealogist there but I never had reply from her.
Patrish.