What is a "financial planner"? What did you expect her to do for you? How is she being compensated? Are you paying too much for her services? One needs to spend time educating themselves to find the right kind of "financial planner". There are many different kinds providing many levels of service.
If she or you weren't aware of the tax consequences, why do you think she or you know what "diversification" really means?
If she didn't know of the potential for CG taxes due on the sale, then she is probably unaware that your new funds may be incorrectly located from a tax perspective. For example, in most cases it makes sense to locate tax inefficient asset classes in tax deferred accounts. Hopefully, your new funds are total US market and/or total INTL index funds. Hopefully, they aren't bonds, REITs, balanced or high turnover actively managed funds or you may be headed for another big tax bill next year, too.
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