Oh, she was 100% being selfish, and her parting “lesson” to Zelena was hardly helpful (and might be what planted the “wickedness” in her).
BUT. Abandonment and infanticide are not -quite- the same level of awful. She didn’t kill Zelena, and the fact that she gave the child any kind of advice at all…and put her in a nice basket at least…suggests that she didn’t expect Zelena to necessarily die. She didn’t really care much WHAT happened as long as the child wasn’t holding her back, but she didn’t kill her.
Keeper of Belle's Gold magic, sand dollar, cloaks, purple FTL outfit, spell scroll, library key, copy of Romeo and Juliet, and cry-muffling pillow, Rumple's doll, overcoat, and strength, and The Timeline. My spreadsheet: https://drive.google.com/file/d/0B6r8CySCCWd9R0RUNm4xR3RhMEU/view?usp=sharing