Gender reveal party after gender selection

Would you go to a gender reveal party for someone you know did IVF gender selection to get a girl? Long story short I tried to get pregnant for 2 1/2 years and it finally happened completely naturally this past February and now I'm 6 months pregnant with a girl. I'm not supposed to know that this person did gender selection to get a girl but truthfully it annoys me because I tried so hard for so long and went through hell and I feel like they cheated just to get exactly what they want. I'm pretty sure all her close family members know she did this and that it's a girl already so I also feel like this party is pretty ridiculous. Do you think I'm wrong to feel this way or is it understandable? I don't mean to judge her but it's the way I feel..