None of those tweets has the blue “verified by Twitter” checkmark.
Those Tweets about the Grease song lyrics raised a flag with me right away. It's just not in character for Ted Cruz to exchange tweets like that. I doubt he's even heard the song or seen the movie. That would have been 1978 when that was popular and Cruz would have been 6 or 7 years old!
Did it ever occur to all of the Trump Supporters (not athletic I hope) that Trump is doing what he always does - when he starts to feel a little heat (most people did not like his attacks on Cruz’s wife), then he has to create a new controversy in order to take the heat off. How many of you have encountered people such as this, that when they are caught lying, then they point a finger of guilt at someone else in order to take the light off of them. That is about on a five year old’s level.
I thought only relatively major celebrities have those? The supposed Tweets seemed legit to me.
Here's her page. I'm not really social-media savvy, but I don't see her account as being verified even now.