Hi Mahleu No, unfortunately they are not compatible. You should be able to pick up the correct cleats from your lbs. Just make sure you install them on the easy option while you testing them out. If you happy and confident with them then swop the cleats around for a more secure clip in.
Welcome to the Hub Kamin My wife had issues with her mtb saddle, she tried a couple types of saddles I had, but the one that works best for her is Selle Italia Diva Gel Flow Saddle. she says its really comfortable.