Bridesmaid Wedding 2 weeks before mine

I got engaged 9 months ago and have planned my date and wedding for next year, already sending out the save the dates 3 months ago. My bridesmaid who knows my date got engaged recently and has had told me they originally had a date in mind 3 months after our wedding. We are beyond happy for them and know our weddings will be in the same destination with lot of our same guests. They also be having to travel to as it is in another city for both weddings and the bridesmaids will probably overlap as well. I have no issue with this as it is bound to happen. The bridesmaid has now informed me that they have changed their mind and wanting to book their wedding 2-3 weeks before ours. I can't help but be upset as it is going to put both our guests in a tough decision of costs and having to choose between our two weddings... Another issues is I feel that it is going to give both not a proper celebration of our weddings... Bare in mind also that there are no other weddings next year of our friend groups and they could choose any other date and I would be able to then understand it a bit better.... how do I handle this and not feel hurt by their decision? I know if it was the other way around she would be so angry at me and I would never think of doing this..