Yes, you've got the forms of the two tenses straightened out.
Here again,
if your instructions were that you must include
all of the words, one of the few ways to include 'Thursday' in the present perfect sentence would be to write a negative sentence and use the word 'since':
Miss Jones has not lost her car since Thursday.
(This sentence is a bit odd, though. It suggests that Miss Jones loses her car often, but that it hasn't happened since Thursday..)
![Wink [;)]](/emoticons/emotion-5.gif)