caregiver is Moldovan citizen. So she can apply as a visitor and in the description of her visit specify that she comes to care for my aunt? and that they both are coming back to Israel after.
So she is coming to visit. If she mentions care for aunt that is considered work and illegal. She will need to show immigration papers that she has a long term visa to live and work in Israel. Given she is not applying from country of citizenship she has higher chance of refusal because doesn’t have ties to return. Does she have a spouse and child to show family ties to return? If so include that information. She should include a job letter with approved leave.
So she needs to include her own bank statements, ties to return (spouse/child, job letter with approved leave), travel history to UK, US, AUS or NZ.