Some names are a little tricky to spell or pronounce, but you are picking a pretty standard well-recognized name
and creating a completely unexpected
pronunciation of it. I think your daughter will have to go through life continuously correcting people on how to say her name. In any language, the name Jeanette starts with either a hard J or soft J sound.
You can listen to it here (kind of cool link, actually):
http://www.forvo.