Adding strikeout to Loading Random Quotes

I’m using the Loading Random Quotes tutorial to build and animation that loads text randomly and then animating a strikeout over the text. The problem is that since all of the line lengths are different sizes, the strikeouts will be different. Is there some way to do the strikeout programatically, so that the strikeout doesn’t exceed the length of the line of text? BTW, some lines are so short, there is only one line of text, The longer lines are only two lines of text.

I’d appreciate any help.