Actually, if Michelle has a 2014 MacBook Pro, she should already have a free copy of Pages, Keynote, and Numbers. No need to purchase MS Office 2011 or Office 365.
Just came to say the same. Also, OP, I'm using Numbers and Pages exclusively now, as I didn't want to buy MS Office when I switched over to the Mac. Personally, I find Pages and Numbers to be just fine. A few tiny difference for how they handle certain equations, but I figured that out (some googling and readings posts scattered around here, actually) I was able to figure it out in a few minutes.
Mind, I understand for some "power users" Numbers might not be enough, though I haven't found anything yet that I can't do in Numbers and Pages that I did before. In fact, for me, I find some things easier to do in Numbers and Pages (for example, I like, a million times more, the way handles embedded tables in a document). And as always said above, you can import Excel files, no worries. You can also save your Numbers files as Excel files too.