The Parish Council is not the correct contact. As far as I am aware the main Burial Ground in Lydbrook is the Churchyard and you would need to contact a Church Representative. The church website is at: http://lydbrook.forestchurch.org.uk
I would also add that I believe there have been few burials in the churchyard in the past 40 years or so as the only space available is in family plots which have not already been filled. The nearest Cemetery is Mile End near Coleford and it opened in 1967 but it would appear that Ella was not buried there.
Mike