Am I dooming my daughter with the name Isla?

Help!! I'm being induced with my second daughter in three days. Our first daughter's name is Ava and we think Isla goes well for our new baby.

The problem is, the silent S. People say they keep wanting to call her "Isis"!! Or they want to pronounce the S. We want it to be pronounced like Island where the S is silent.

We already have a silent S in our last name that people butcher. Last name is similar to this - Quesmal. You'd pronounce it Kwa-mal but people say Kwes-mal. Now im worried about people pronouncing both silent S's.

People are saying to change the spelling to Ila or Eila but that just looks weird to me.

I thought people generally understood how to pronounce the name Isla or am I wrong?