@mnahmnah no I think she was embarrassed by the cheer and realising half the villa had been watching what should have been a bit of a personal/private moment. (Excluding the tv cameras)
I think Ellie genuinely likes Alex. She said Alex was her main focus earlier in the episode and I don't think it's fake or just because she knows how popular he is.
Also YY to the people earlier who were saying how pretty Ellie is, I think more so because she's natural not slathered in the makeup.
I also respect the fact that she decided to just remove herself from the Wes/Laura situation and I think she worded it tactfully to Wes too.