I feel that it's only fair that we should reciprocate the sentiment and kick out any Sudanese National that breaks our laws! Let's see the collection of muppets that we refer to as a government do that!
We do actually if the offence is serious enough....
From what I've heard and understand the law that was broken was nothing to do with democracy but to do with preventing insults to the primary religion of the country - we have a few similar laws in the U.K. (blasphemy is I believe still on the books under some circumstances, or only recently repealed*).
The punishments available vary in range much as they in the UK (even if they vary in the actual punishment), look at the way a British court might deal with an burglary case, it can vary between a fine, being put on probation, sent to jail etc depending on how serious it is, and what intent there was behind it.
The court has found her guilty, which technically she almost certainly was (you don't need intent to be guilty of many offences in the UK either**), and handed her what was probably about the lowest sentence they could for a guilty verdict.
The deportation is probably standard for any foreigner who has been found guilty of an offence that has led to jail.
It's also worth noting that by the sounds of it the court was caught up in the middle of a struggle between hard-line Muslims and the more modern thinking/soft-line muslims, and presumably under a lot of political pressure to give her a sentance that could be seen as an example if she was found guilty.
But ignore all this, after all we all know johnny foreigner is always wrong, all Muslims are wannabe suicide bombers from the 11th century and British law is perfect and the best in the world..
*I believe we still have some "Church" law offences, that only apply when the offence takes place in a Church of England.
**A number of motoring offences will get you done, even if there was never any intention to carry them out (speeding and drunk driving for example).