It cost Taub $5.00 to send 100 text messages. How many text messages did she send if she spent $9.55?

Let m be the number of text messages Taub sends. We know that 5/100 = 9.55/m.

Multiplying both sides by m, we get 5m = 9.55 * 100.
Dividing both sides by 5, we get m = (9.55 * 100)/5 = 191 text messages. Answer: \boxed{191}.