There were only 2 Mary Anns from Lurgan in the death records for the 1890's. You are probably looking for Mary Ann age 32 who died in Lurgan March - June, 1898. The death registration is in Vol 1, page 549 for that year.

You can rent a Mormon tape with that page for less than seven dollars typically, if you don't mind the long wait (months even) for the tape plus having to view it in their library. Other sources offer quick service for higher rates.

The other Mary Ann was 21 and died March-June, 1892 in Lurgan, vol 1 page 511.