Withdrawals from Roth IRA are tax free if the account is 5 years old. From the IRS:
Generally, inherited Roth IRA accounts are subject to the same RMD requirements as inherited traditional IRA accounts. Withdrawals of contributions from an inherited Roth are tax free. Most withdrawals of earnings from an inherited Roth IRA account are also tax-free. However, withdrawals of earnings may be subject to income tax if the Roth account is less than 5-years old at the time of the withdrawal
Assuming you're not an eligible designated beneficiary, you have to follow the 10-year rule. If the account is already >5 years old, then you can withdraw it any time in the next 10 years, tax free. Otherwise - wait until the holding requirement is met and withdraw then.
Since it is tax free, you do not need to plan withdrawals other than satisfying the holding period.
It would probably make sense to keep it in Roth for as long as possible, assuming you expect more earnings, so that all the additional earnings would be tax free. The risk is that the 10 year period is not all that long, and you may sustain losses instead of earnings.
You should probably ask the financial planner for her rationale. She may be considering the potential market volatility and trying to balance the tax benefit of appreciation with the potential loss of value if market goes against you.