That’s sort of asking for a stock that will double! Let’s go back to square one. If your daughter is working she can open a Roth IRA in her name (assuming she is single and has income under $122,000 in 2019). If she is spending all her after-tax money (and I can see how that can happen if she lives in New York) then you can gift her money to invest in a Roth IRA. But this is a long-term project and should be invested in a diversified way in a low-cost stock market mutual fund. I suggest you contact Vanguard and work with her to open her IRA. She can contribute up to $6,000 if she has that much earned income.
It’s nice of you to encourage her, and perhaps gift her some money, to get going on a Roth IRA. BUT stop looking for “high interest” (synonymous with high risk) and encourage her to keep making annual contributions to a S&P 500 stock index fund at Vanguard. Over the long run, she will come out far ahead.