Here’s a revised version (kept under 700 characters):

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Hi! We’re looking for an occasional sitter for our 5-year-old. I’m expecting a baby in mid-Dec, so we need someone reliable to pick her up after school and care for her into the evening (possibly through bedtime) when we go to the hospital, plus occasional help afterward. We’d like intro visits on Nov 26 and 28, and 1–2 more before mid-Dec. Must have experience, be comfortable with 2 cats, engage her in simple learning/play, and come independently. Responsibilities include safe supervision, play, and simple snacks.