Sile is pretty. I like the spelling, but unless you're in an area where Irish names are familiar, there might be a lot of pronunciation issues. Sheila would be more straightforward even though I prefer Sile. I think you'd still be honoring her regardless of spelling.
Sile Vivian / Vivien / Vivienne
Sile Verity
Sile Madeline / Madeleine
Sile Rhiannon
Sile Annabel / Annabelle
Sile Isabel / Isabelle / Isobel
Sile Caroline
Sile Abigail
Sile Gabrielle
Sile Meredith
Sile Bernadette
Sile Charity
Sile Montserrat
Sile Julianne
Sile Juliet / Juliette
Sile Adrienne
Sile Adrianne
Sile Gwendolyn / Gwendolen
Sile Guinevere
Sile Marian
Sile Marianne
Sile Mariam
Sile Miriam
Sile Melanie
Sile Allison / Alison / Alyson
Sile Bethany
Sile Gillian / Jillian
Sile Adelaide
Sile Adeline
Sile Rosemary
Sile Rosemarie
Sile Celestine
Sile Ambrosine
Sile Eleanor / Elinor
Sile Josephine