FTM and sister turned into a snake

So my step sister is 22 and she announced she was pregnant like 2 weeks ago. I just found out i was pregnant and told my sep sister first and she was SUPER happy and excited we could help each other through things. Then i told my family. Then i guess she got jealous and angry that i was pregnant because now the spotlight isn’t 100% on her. She texted our mom the next day and said i hate living at home and hate being around her and i never said that. I guess she was trying to get her to turn against me so she wont help me with my baby. Did i do anything wrong😔