Can I claim 60% of all investment income for 2015 for myself and 40% for my wife with no problem from CRA?

This question relates to a joint investment account between my wife and myself. It was opened initially as a joint account.

In 2014 I claimed 100% for myself only as the money in the investment account just came from my own inheritance. In 2015 my wife inherited some money which grew the investment account so that 40% came from her and 60% came from me. How should I handle this?

For now the data I've entered in Turbotax have all of 2015 income claimed just by me. But from the tax info I've seen it seems I should  split it 60  40 as indicated above?

Should I also split the values reported in Shares and Mutual Funds Sale Summary 60 40 also? Have reported Total Proceeds and Total adjusted Cost Base there.