Repairing my Nissan Micra and notes for Breakdown cover

During the two awful weeks of freezing weather my poor little Nissan Micra has had to sit outside, totally unprotected. It never failed to surprise me by starting first time every morning. That is until, what should have been my normal 10 minute journey into work, took one and a half hours. Not due to icy roads, but due to flooding along my normal route. She certainly did not like that stopping, starting and crawling along in first gear. She responded by flashing a light at me. Thought at first it was the oil and topped up, but, I was wrong. Having read the hand book found it was something to do with the emissions. Now what do I know about such things? Zilch! Rang the local garage who were very helpful and gave me the number of a garage who could do the diagnostics.
When I spoke with them and asked if she was Ok to drive before I took her in to them was told 'Oh yes, 9 times out of 10. By the way, I was the 10th. She just would not start on the day I was due to take her to the garage. Anyway, as I had the incorrect level of Breakdown cover (which will be rectified on renewal, due shortly) the garage came and towed her away. Must admit they were really good and explained to me about the problem she had. It was the Throttle Body that had gone. Now normally, this part is in two pieces and the faulty separate bit could be replaced for about 100 pounds. Not so with the Nissan Micra, it is a full unit and cost more like 300 pounds with vat. Well, I couldn't just put a plaster on her and hope for the best so she had to have the part. She's OK now and hopefully will continue to be so for the foreseeable future.
A week later:-
Next few days were strange driving. Always so reliable and now worse than it was before the expensive salve. She has gone back to the garage. Sure he thinks it's just because I'm a woman and don't know what I'm talking about. I have had difficulty starting it, if left to idle she cuts out. Have to pump the gas to give her any sort of revs. Doesn't like being in traffic and queueing - cuts out. She judders when idling and is much noisier than before. I am not happy. They will ring me tomorrow and let me have the verdict. I hope she plays up for them as well.