Brokerage withdrawal or Roth IRA Contribution Withdrawal?

I have $100K in a taxable brokerage account and $100K in a ROTH IRA account with about $40K of contributions. Both accounts are intended for retirement, but I also have a well funded 401K and a fully funded E-fund. I'm currently happy with the amount of funding in my retirement accounts and my future contributions put me on track to meet my goals.

I'd like to come up with $10K to help a friend in need. Does it make more sense to pay taxes on the cap gains in the brokerage account or to pull the money from my ROTH by withdrawing $10K of my contributions?

Not looking for advice on tapping accounts I have earmarked for retirement, just looking for advice and factors to consider when choosing between the two accounts. Thanks!