Normally I'd say this is enough. Get some rest for the French Open. But in this case, no, she should seize the moment to try and go deep here. This is a great opportunity. Puig is a solid player on all surfaces. She lost to Sharapova 6-3 7-5 last week in Rome. If Mirjana's not totally spent she can compete with her though in this good form she obviously has now. The match today was very short so hopefully the cumulative effect of the 3 hr match yesterday and playing 5 days in a row (that's a lot) doesn't hit her tomorrow.
I rather agree that a player like Miki needs to seize the day whenever she finds herself in form. There are no guarantees that she would even win a single match in Paris. After all, she could draw Serena or Maria in the first round at Roland Garros. Serena and Maria, on the other hand, could afford to tank warm-up matches in small events so they could be fresh as daisies and well-settled into their suites at the Ritz-Carlton, Champs-Élysées for the start of the French Open.
Miki does need to grab the apple and run with it, so to speak, no matter where she might be, whenever she might be there.
Important right now is a lot of good physio work, stretching, and probably a very long (but not too long) massage to keep her musculature in optimum condition for tomorrow. I don't know what to expect against Puig. I really don't. Not after playing five consecutive days. Of course, Miki has won ITF events having played five consecutive matches, so, not out of the picture. But even though I guess I don't expect her to beat Puig, she has done a wonderful RG preparation, here. The rest of the week she can knock around with a bit of doubles, then ease on up the road to Paris and hopefully get that Grand Slam main draw win on clay once again!