Yes, but the most annoying part of it was that the scene was calculated to gin up sympathy for Skye. In Repairs, Skye spent the whole episode insulting and demeaning May without cause, starting with that "warm and fuzzy" crack and including, "She needs to get laid." All this while whining to Coulson that she was the person best suited to approach Hannah because she's so nice. May wasn't allowed to respond to Skye's insults because she didn't hear most of that nonsense.
But what May said to Skye is absolutely true. They were prepping for a dangerous mission, which meant there was no time for Skye's selfish mewling about her long-lost mommy. It's annoying to see the character who was in the right setup to look like a bully for no reason.