Jealous bridesmaids

Hello! I just recently got engaged in August and we are planning a wedding for next September! I couldn’t be more excited I’m marrying my high school sweetheart that I have been with for five and a half years(: I have noticed since we got engaged my friends have not been excited with me. This came as a surprise because they had always talked about how excited they were to plan with me. My friend about a month later tells me she went home to her boyfriend and told him they’re getting married, he had been on the fence about this for a while and she shared with me before this that they weren’t in a hurry. I am happy for them but I feel like she isn’t happy for me. She came back the next day and said that he had proposed. I was excited for her and we talked about celebrating. For a few months she has been acting as though we are more enemies than friends. This hurts my feeIings because I don’t understand why we can’t both have our happiness. My fiancé picked out my ring for me and I am so in love with it but every time she is around she whispers to other people at work about how she won’t wear hers to work because it will get dirty (in the medical field) this may sound like a choice but the way she says it I know she’s picking on me about mine. She makes rude comments about how we shouldn’t feel like we need a big wedding when that is what we have always wanted because family is important to us both. Should I say something to her because I don’t understand why loving your future spouse should be a competition.