New moms are often stuck in place while nursing and rarely have a free hand to hold a glass. If your baby has had a restless night, your wife might have gone hours without replenishing her own fluids. Hand her a glass of water and remind her that it’s essential to her health to keep hydrated.
A buddy of mine said that his wife literally reacted more enthusiastically when he brought her a cup of water while breastfeeding, than when he gave her a pair of earrings while they were dating. While you’re at it, drink some water yourself.