People over using "lol"

My cousins wife is also pregnant and she is due between my sister and I due dates. My sister is due early December I'm due early April. This is my sisters second pregnancy my first. She seems to always try to down play my pregnancy since she also pregnant with her first. Plus she over uses lol and I can't stand it. Sadly I'm not annoyed at all people this pregnancy just her. I know that's really mean to say and I try to be really nice but I had to let it out somewhere. Plus my sis and I are 4 months apart by the time I am registered for a shower she will already have the twins. Why would we have a joint baby shower?