new computer for the wife

wifes computer died today...its been hot to the touch for years...now it wont turn on



Im looking at a Dell



Windows 7 or 8.1? which would you choose



touch or non touch?



4th generation I-5 or I-3?



im looking closely at the Inspiron 15 non touch for $429...or the touch version for $499



im thinking my kids would like the touch version



my wife uses it mainly for emailing/facebook and Word...and the kids for games....



thanks