I agree with maleficent. Sounds like she is jealous of you, that you might take attention away from her and her brother's relationship (which is too bad since hello, he'll be your husband.)
If I was in that situation I would tell her she hurt my feelings. I feel like if I don't tell people that are close to me what I'm feeling, it hangs around in my head and my heart until I get it out.
Congratulations, by the way!
