Dumped by your bestfriend

Hi all, hope you can help...

i have recently moved back to the UK from Dubai and had to leave my best friend behind. Since coming back to the UK we have been talking every day as normal and I miss her so so much :( but recently, she went to Jordan to meet her boyfriend And found out he was cheating on her. Obviously my first reactions were to keep my opinions to myself and purely be her support but as she kept telling me how she's not going to tell anyone and they they want to work through it, this is the 2nd time he's done this and worse so this time with photographic proof too! Eventually I gave her my opinion that I don't feel he's worth her time and how he's so typical to do that again etc. I worded everything as nicely as I could because I knew if she hadn't told anyone, she wouldn't have gotten any outside opinions on the matter. Consequently, she erupted saying how dare I question the relationship and his love for her etc, the next thing I know both me and my boyfriend have been blocked by her, her boyfriend and her family?! I simply tried doing what I felt was best but now I've lost my best friend who got me through so much in Dubai :( can anyone give me some advice on what to do? I miss her so much and it's so sad to think she would do that to me