I like both Pascal and Pascale. I once had a former French Canadian work colleague named Pascale. Although she was an unpleasant woman and was eventually let go, I've made a concerted effort NOT to let that negative association taint the name for me. Pascaline is ok but it seems a little over the top. I think some diminutives go overboard with cloying sweetness.
FYI - A Pascaline is the world's first calculator invented by French mathematician, Blaise Pascal.
Happy Easter to you too!