When I overdo it in strength training, every movement makes me just want to beg for mercy. The next day, I want to curl in a corner and whimper. The third day is pretty miserable. The fourth feels really sore. By the fifth, I feel like I could work those muscles again without doing damage. By the sixth, it's a mild ache.
I also like to soak in a hot bath when I'm sore, but I second the Ibuprofen. It takes the edge off and lets me get back to my errands. For those first four days, if I can avoid using those muscles for anything, I do.
Since she's having trouble sleeping, I recommend the Ibuprofen right before bed, maybe mixed with some chamomile tea or other soporific and maybe some melatonin (which is supposed to be a natural chemical we find in food that makes us sleepy). My DH also uses Zzquil successfully, but it doesn't seem to work well on me. The sleep is REALLY crucial for recovering as fast as possible.